Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English often
Old English oft (inherited)
Danish ofte (cognate)
German oft (cognate)
Middle English often (inherited)
Middle English selden (cognate)
Middle English ofte (inherited)
Middle English oft (mention)
North Frisian oftem (cognate)
Proto-Germanic *ufta (inherited)
Proto-Germanic *uftō (mention)
Icelandic oft (cognate)
Norwegian - (cognate)
Scots oftin (cognate)
Saterland Frisian oafte (cognate)
Swedish ofta (cognate)

English oft (mention)
English oft (link)
English oftentime (compound)
English unoften (prefix)
English oftenly (suffix)
English oftenness (suffix)
English oftentide (compound)
English oftensith (compound)
German oft (mention)
Esperanto ofte (derived)
North Frisian oftem (cognate)
Kikuyu kaingĩ (mention)
Norwegian Nynorsk ofte (cognate)
Pennsylvania German oft (cognate)
Scots oftin (link)
Saterland Frisian oafte (link)