paronymous
/ˌpærəˈnɔməs/Definitions
1. adjective
Derived or formed by a process of formation, especially by a process of derivation.
“The paronymous terms ‘telephone’ and ‘telegraph’ share a common root.”
2. noun
A word that is derived from another word by a process of derivation, especially one that is closely related to the original word.
“In linguistics, the paronymous relationship between ‘library’ and ‘librarian’ is studied.”