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astrology / astronomy

Modern astronomers consider astrology an outdated superstition. You’ll embarrass yourself if you use the term “astrology” to label the scientific study of the cosmos. In writing about history, however, you may have occasion to note that ancient astrologers, whose main goal was to peer into the future, incidentally did some sound astronomy as they studied the positions and movements of celestial objects.

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asterick

Some people not only spell this word without its second S, they say it that way too. It comes from Greek asteriskos: “little star.” Tisk, tisk, remember the “-isk”; “asterick” is icky.

In countries where the Asterix comics are popular, that spelling gets wrongly used for “asterisk” as well.

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assure / ensure / insure

To “assure” a person of something is to make him or her confident of it. According to Associated Press style, to “ensure” that something happens is to make certain that it does, and to “insure” is to issue an insurance policy. Other authorities, however, consider “ensure” and “insure” interchangeable. To please conservatives, make the distinction. However, it is worth noting that in older usage these spellings were not clearly distinguished.

European “life assurance” companies take the position that all policy-holders are mortal and someone will definitely collect, thus  assuring heirs of some income. American companies tend to go with “insurance” for coverage of life as well as of fire, theft, etc.

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ascent / assent

“Assent” is a verb meaning “agreement,” “consent.” “Ascent” is a noun meaning “climb.” When you get people to agree with you, you gain their assent. When you climb a mountain, you make an ascent.

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asocial

Someone who doesn’t enjoy socializing at parties might be described as either “asocial” or “antisocial,’ but “asocial” is too mild a term to describe someone who commits an antisocial act like planting a bomb. “Asocial” suggests indifference to or separation from society, whereas “antisocial” more often suggests active hostility toward society.

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aspect / respect

When used to refer to different elements of or perspectives on a thing or idea, these words are closely related, but not interchangeable. It’s “in all respects,” not “in all aspects.” Similarly, one can say “in some respects” but not “in some aspects.” One says “in this respect,” not “in this aspect.” One looks at all “aspects” of an issue, not at all “respects.”

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assess

“Assess” is a transitive verb; it needs an object. You can assess your team’s chances of winning the bowl game, but you cannot assess that they are playing better than last year. “Assess” is not an all-purpose synonym of “judge” or “estimate.” Most of the time if you write “assess that” you are making a mistake. The errors arise when “that” is being used as a conjunction. Exceptions arise when “that” is a pronoun or adverb: “How do you assess that?” “I assess that team’s chances as good.”

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