Friulian adjectives and nouns have two grammatical genders (masculine and feminine) and two numbers (singular and plural).
The plural of feminine adjectives/nouns always ends in S.
If the adjective/noun ends with E in the singular, it ends with IS.
cjase cjases cjasis
Masculine adjectives/nouns form the plural in the same way - except with words ending with L which change the L in I to form the plural.
poete poetes poetis
A few masculine adjective/nouns display a prepalatal CJ sound in the plural.
Words which in Italian change their gender in the plural (e.g. ginocchio (m sing)-ginocchia (f pl), braccio-braccia, orecchio-orecchie) do not behave in the same way in Friulian.
Friulian surnames traditionally change according to gender and number.
Prampar Prampare (feminine) Prampars (plural)