comeronym

English

co- +‎ meronym

Examples
finger and thumb Both meronyms of hand. branch and trunk Both meronyms of tree.

comeronym (plural comeronyms)

(semantics) A word or phrase that shares a holonym with another word or phrase; a part of the same whole.
- 2002, Knowles, Murray; Malmkjaer, Kirsten, “Traditional juvenile fiction”, in Language and Control in Children's Literature‎, Routledge, →ISBN:
  The representation of positive maleness in Victorian narratives strongly connects the active and physical to either the superordinate face or its comeronyms eyes or mouth, wherein, according to the authors, can be detected evidence of the young hero's superior moral qualities to match his physical attractiveness.