Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *mer- (sea)

→ English marinara (root)
→ English mare (root)
→ English marine (root)
→ English maritime (root)
→ English mere (root)
→ English larimar (root)
→ English mer- (root)