didtich,couplet

cou・plet

━━ n. 【韻律】（詩の）対句.
⇒couple

dis・tich

Meaning #1: two items of the same kind
Synonyms: couple, doubleton, pair, twosome, twain, brace, span, yoke, couplet, duo, duet, dyad, duad

━━ n. ＝couplet.