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Latin plānus

English floor (cognate)
English plane (mention)
English plain (derived)
English plain (mention)
English planar (derived)
English planular (derived)
English planulate (suffix)
Asturian llanu (inherited)
Asturian planu (borrowed)
Catalan pla (inherited)
Cebuano yano (derived)
German plan (borrowed)
German Piano (derived)
Greek πλάνη (derived)
Spanish llano (inherited)
Spanish terraplenar (mention)
French plan (borrowed)
French plain (inherited)
Old French plain (mention)
Old French plain (inherited)
Friulian plan (inherited)
Irish lann (cognate)
Irish plána (mention)
Irish pianó (derived)
Irish plean (derived)
Scottish Gaelic lann (mention)
Scottish Gaelic liogh (mention)
Galician chaira (derived)
Alemannic German Plangge (mention)
Icelandic plana (derived)
Italian piano (inherited)
Italian pialla (derived)
Italian planare (derived)
Italian planare (derived)
Latin plane (mention)
Latin planum (mention)
Latin plancus (cognate)
Latin explano (affix)
Latin planities (suffix)
Latin complano (affix)
Latin planiceps (suffix)
Latin aeroplanum (mention)
Latin planarius (mention)
Latin planarius (suffix)
Latin planipennis (affix)
Latvian plāns (cognate)
Marshallese piano (derived)