倭絵[yamatoe] Yamato-e (classical Japan decorative paintings)
倭人[wajin] Japanese person (term esp. used in ancient China, etc.)
倭冦[wakou] Japanese pirates (of the Middle Ages)
倭歌[waka] waka
倭語[wago] native Japanese words (especially as opposed to Chinese and other foreign loanwords)

倭歌[yamatouta] Japanese poem
倭訓[wakun] Japanese reading of a Chinese character
倭名鈔[wamyoushou] Wamyoruijusho (famous Heian-period Japanese dictionary)
倭名類聚鈔[wamyouruijushou] Wamyoruijusho (famous Heian-period Japanese dictionary)

哀歌[aika] lament (song)
愛唱歌[aishouka] (one's) favourite song
詠歌[eika] poem (esp. tanka)
艶歌[enka] enka
応援歌[ouenka] rooters' song

歌い合う[utaiau] to sing responsively
歌い上げる[utaiageru] to sing at the top of one's voice
歌詠み[utayomi] tanka composer
歌会[utakai] poetry party or competition