Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English roop
Old English hrōpan (inherited)
German rufen (cognate)
Middle English ropen (inherited)
Proto-Germanic *hrōpaną (inherited)
Proto-Indo-European *ker- (derived)
Proto-Indo-European *kor- (mention)
Icelandic hrópa (cognate)
Dutch roepen (cognate)
Scots roup (cognate)
Saterland Frisian roupe (cognate)
Swedish ropa (cognate)

English croup (link)
English roup (mention)
English roopy (suffix)
English roopit (suffix)
English roopit (link)
Danish råbe (cognate)
German rufen (cognate)
German rufen (link)
Luxembourgish ruffen (cognate)
Saterland Frisian roupe (cognate)