Paronymous Definition
 pə-rŏnə-məs 
    adjective
  
 Derived from the same root; cognate, as the words differ and defer.
 Webster's New World 
Allied by derivation from the same root; having the same stem; for example, beautiful and beauteous.
 American Heritage 
(semantics) Having a similar sound, but different orthography and different meaning.
"Hare" and "hair" are paronymous.
 Wiktionary 
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