言葉【ことば】
language, dialect, word, phrase, expression, term, speech, (manner of) speaking, (use of) language, words, remark, statement, comment, learning to speak, language acquisition
青葉【あおば】
fresh leaves
合言葉【あいことば】
password, watchword, motto, slogan
双葉【ふたば】
seed leaves (of a dicot), cotyledons, bud, sprout, early stages, very beginning
松葉【まつば】
pine needle
落ち葉【おちば】
fallen leaves, leaf litter, falling leaves, leaf fall, dropping leaves, defoliation, deciduous
言葉遣い【ことばづかい】
speech, expression, wording, language
広葉樹【こうようじゅ】
broadleaf tree
針葉樹【しんようじゅ】
conifer, needle-leaved tree
二葉【によう】
two flat things
木の葉【このは】
leaf (of a tree), tree leaves, foliage
一葉【いちよう】
one leaf, one page, one sheet, one card, one photo, one boat
話し言葉【はなしことば】
spoken language, colloquial expression
花言葉【はなことば】
language of flowers (e.g. the use of red roses to signify love), floriography
枝葉【しよう】
branches and leaves, foliage, unimportant details, nonessentials, side issue, digression
葉っぱ【はっぱ】
leaf, blade (of grass), (pine) needle, marijuana, cannabis
葉巻【はまき】
cigar
腐葉土【ふようど】
humus, leaf mold, leaf mould, mulch
前頭葉【ぜんとうよう】
frontal lobe
中葉【ちゅうよう】
about the middle (of an era), middle lobe (right lung), median lobe (prostate)