Simple, Gods.
None. It is the plural form of the Latin word piscis, a fish.
Cubicula.
Linguae.
Forum---Plural Form Forums,Foreign Plural Form Forumina
The Latin masculine noun draco (a snake) has the nominative plural form dracones
Dei is a form of the word "deus" meaning "a god" or "God". It's either the genitive singular ("of God/of a god") or the nominative/vocative plural ("gods" as a sentence subject).
Gladioli (actual Latin plural) or gladioluses (Anglicized).
The plural of vertebra is vertebrae.
culinae
Facimus.
The Latin "pelves" is the plural form of pelvis, although "pelvises" is also used in English.
Both the singular and plural form of this word is "processus", it does not differ.