Well, depending on the dictionary, the answer could be “sometimes.” However, I’m getting ahead of myself. Someone asked me how Garner’s Modern American Usage compared to the OED. Honestly? That’s apples and oranges. And if you add stylebooks to the set, it’s apples and oranges and bananas.
I know you know what a dictionary’s for. That’s where you look up spellings, definitions of words, parts of speech, and sometimes — but only sometimes, depending on which dictionary you have — usage tips. If you’re a really bad speller, a “normal” dictionary might be next to useless. You’ll want a misspeller’s dictionary instead. If you’re a person who often can think of the concept of a word, but not the word, perhaps a reverse dictionary would work better for you. Here are five dictionaries I keep on my reference shelf, right here where I write and edit. I use the Encarta the most, but truthfully, I more often than not look online at the Merriam-Webster site. The Chicago style references M-W, so that’s where I go for “business.” I love my Encarta, though, for “pleasure browsing.” It contains a lot of usage information, but not as much as a dedicated usage manual.
Two for general use, one for etymology, one for idioms, and a reverse. All helpful in their own ways.
Next, I have two usage manuals. As the name would suggest, they’re dedicated to English-language usage. Not to spelling, or definitions, or how the words should appear on the page, but to how words are (or should be, or should not be) used. The paperback M-W I’ve had for years and years. The copy of Garner I just got a couple of weeks ago. I’m very, very happy with the latter most of all because of the “five stages of acceptance,” as I’ve taken to calling them. I wrote about those over on G+ not long after I got the book, in a post about the shift in meaning of the word “nimrod” from “mighty hunter” (the Biblical Nimrod) to “fool, idiot” (thank you, Bugs Bunny). That shift epitomizes Garner’s “stage 5”: “universally adopted except by a few eccentrics.” Once a change reaches stage 5, the ship has sailed. The train has left the station. Give it up; there’s no going back. I find Garner’s book most useful for identifying when it’s still worth fighting to retain a usage, or when it’s best to just let it go and grumble to myself.
I grumble a lot.
Garner and M-W, the two usage manuals I own
Then we have stylebooks. These are unlike either dictionaries or usage manuals. The main thrust of any stylebook is to engender consistency in presentation. Nearly all journalistic media uses the AP stylebook. That’s why for the most part when you’re reading a news item, it looks pretty much like every other news item out there as far as actual appearance. The title is capitalized a certain way. There’s a dateline, and the date is styled a certain way. Times are presented in a certain way. You get the drift, I think. You don’t use a stylebook to look up a definition of a word. You use a stylebook to see how a word should be presented (styled) in your work, to conform to that style. For example:
“mecca Lowercase in the metaphorical sense; capitalize the city in Saudi Arabia.” (Associated Press Stylebook and Briefing on Media Law 2012)
If you don’t know what “mecca” means as a metaphor, this won’t tell you. You need a dictionary for that. However, now you know that if you use this metaphorically, you don’t capitalize it. That’s a style issue. In the AP stylebook, this particular word is found right where you’d expect it: under the letter M, just like in a dictionary. In the Chicago Manual of Style, though, you won’t find “mecca” listed in that way. CMoS is positively labyrinthine compared to AP. They have different focuses, different audiences. I learned Chicago style long before AP, and I still have to look up some things to make sure I’m not mixing them.
I bought a copy of the New Oxford Style Manual so I would have a reference handy when I’m copy editing UK writers’ work. Not that it seems to matter much, honestly. I asked a number of them online if they used the term “full point” (which NOSM says is the preferred term, now) or “full stop.” No one had even heard of “full point.” The schools are still teaching “full stop.” Take THAT, NOSM. I won’t even go into the issues with quotation marks, save to say everything I thought I knew turned out to be wrong. Mostly. Apparently in the fiction market, dialogue is set the same way as it is in the US: double quotes for direct quotations, single quotes for quotes-within-quotes. BUT, in the nonfiction market, that is reversed — that is to say, it’s the way I expected, with direct quotes set in single quotation marks, and double ones used for quotes-within-quotes.
NOSM doesn’t reflect that, though, which I find interesting in the extreme. Anyway, here’s the third photo.
“The” UK stylebook (comparable to Chicago) on the left, CMoS 16th ed, and AP
So, right. I can’t compare a usage manual to a dictionary to a stylebook. They’re different books with different purposes. Dictionaries have some elements of usage manuals; usage manuals have some elements of dictionaries; stylebooks might contain abridged dictionaries (the NOSM contains the New Oxford Dictionary for Writers and Editors), and often contain brief notes about usage. But, all in all, one cannot replace another.