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Are () The present indicative plural of the substantive verb to be; but etymologically a different word from be, or was. Am, art, are, and is, all come from the root as.
Are (n.) The unit of superficial measure, being a square of which each side is ten meters in length; 100 square meters, or about 119.6 square yards.
Be (v. i.) To exist actually, or in the world of fact; to have ex/stence.
Be (v. i.) To exist in a certain manner or relation, -- whether as a reality or as a product of thought; to exist as the subject of a certain predicate, that is, as having a certain attribute, or as belonging to a certain sort, or as identical with what is specified, -- a word or words for the predicate being annexed; as, to be happy; to be here; to be large, or strong; to be an animal; to be a hero; to be a nonentity; three and two are five; annihilation is the cessation of existence; that is the man.
Be (v. i.) To take place; to happen; as, the meeting was on Thursday.
Be (v. i.) To signify; to represent or symbolize; to answer to.