by contraction from an unused root meaning to gather; properly, assemblage; used only adverbially also, even, yea, though; often repeated as correl. both...and:--again, alike, also, (so much) as (soon), both (so)...and , but, either...or, even, for all, (in) likewise (manner), moreover, nay...neither, one, then(-refore), though, what, with, yea.
also, even, indeed, moreover, yea
also, moreover (giving emphasis)
neither, neither...nor (with negative)
even (for stress)
indeed, yea (introducing climax)
also (of correspondence or retribution)
but, yet, though (adversative)
even, yea, yea though (with 'when' in hypothetical case)