I’m sorry, I must be dense because I’m still not getting the fine line between That and Which, although I’m trying. Anyway, here’s the last part of words you may be saying wrong:
You might say: That
You might mean: Which
Why: "The money that is on the table is for you" is different from "the money, which is on the table, is for you." That pinpoints the subject: The money that is on the table is yours; the money in my pocket is mine. Which introduces an aside, a bit of extra information. If you remove "which is on the table," you won't change the meaning: The money is for you (oh, and unless you don't want it, it's on the table). If the clause is necessary to your meaning, use that; if it could safely be omitted, say which.
You never mean: Outside of
You always mean: Outside
Why: These two prepositions weren't meant for each other. Perfectly acceptable: "Wearing a cheese-head hat outside Wisconsin will likely earn you some stares and glares (unless you're surrounded by Green Bay Packers fans, that is)."
You might say: Each other
You might mean: One another
Why: Tradition says that each other should be used with two people or things, and one another with more than two, and careful speakers should follow suit: "The three presenters argued with one another over who should announce the award, but Ann and Barbara gave each other flowers after the ceremony." (By the way, if you need the possessive form of either one when writing that business letter, it's always each other's and one another's; never end with s'.)
8 Confusing Pairs
leery, wary: suspicious
farther: for physical distance
further: for metaphorical distance or time
principal: of your school
compliment: nice thing to say
continual: ongoing but intermittent
continuous: without interruption
stationary: stands still
imply: to suggest a meaning
infer: to draw meaning from something
affect: typically a verb, meaning "to act upon or cause an effect"; as a noun, it's "an emotional response"
effect: typically a noun, meaning "something produced," like a special effect; as a verb, "to bring about," as in "to effect change" •
Hope this helps.