Background: In contrast with other Romance languages, Catalan has many monosyllabic words; and those ending in a wide variety of consonants and some consonant clusters. Also, Catalan has final obstruent devoicing, thus featuring many couplets like amic "(male friend") vs. amiga ("female friend").
Question: What do many words feature?
Answer:<extra_id_0>.
<extra_id_0> couplets<extra_id_1>