Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Welsh gor-
Proto-Brythonic *gwor- (inherited)
Proto-Celtic *uɸor- (inherited)
Proto-Indo-European *upér (inherited)
Cornish gor- (cognate)

English gorsedd (mention)
Old English ofer (cognate)
Welsh gorlifo (affix)
Welsh gorsaf (prefix)
Welsh gwarthal (affix)
Welsh gorchaw (affix)
Welsh cynhorthwy (affix)
Welsh gorberffaith (affix)
Welsh gorchymyn (affix)
Welsh gorffwys (prefix)
Welsh gorwydd (affix)
Welsh gwarchod (prefix)
Welsh gorasgellu (affix)
Welsh gordderch (affix)
Welsh goruchel (affix)
Welsh goresgyn (affix)
Cornish gor- (cognate)