The Latin masculine noun collis (a hill) has a singular genitive collis and a plural genitive collium.
Collis, collis, m
The Latin masculine noun tumulus (a rounded hill, a burial mound or grave) has the genitive singular tumuli and genitive plural tumulorum.
Is (genitive: eius).
It may be from the Latin word for "hill"
"Growing" in Latin is crescens (genitive crescentis).
Draco (genitive: draconis).
Corpus (genitive: corporis).
Saltans (genitive: saltantis).
Amans (genitive: amantis).
genitive case
Servorum.
The Romans borrowed the Greek word for griffin. It appeared in Latin in as gryps (genitive gryphis) and as gryphus (genitive gryphi), both masculine.