Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English reactor
English react (suffix)
English or (suffix)

English georeactor (prefix)
English varactor (blend)
English bioreactor (prefix)
English nanoreactor (prefix)
English photoreactor (prefix)
English attoreactor (prefix)
English nonreactor (prefix)
English microreactor (prefix)
English angioreactor (prefix)
English minireactor (prefix)
English sonoreactor (prefix)
Dutch reactor (borrowed)
Portuguese reator (derived)