Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English gregarious
Proto-Indo-European *h₂ger- (root)
Latin gregārius (derived)

English aggregate (mention)
English segregate (mention)
English gregariously (suffix)
English gregariousness (suffix)
English nongregarious (prefix)
English ungregarious (prefix)