Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English triad
Ancient Greek τριάς (derived)
Latin triad- (derived)
Latin trias (mention)

English tri- (link)
English tong (link)
English triadic (suffix)
English trine (link)
English triadist (suffix)
English triadism (suffix)
English triaded (suffix)
Portuguese trinca (link)