Paronymous
Paronymous , adjective
[Greek parw`nymos; para` beside, near + 'o`noma a name.]
1.
Having the same derivation; allied radically; conjugate; -- said of certain words, as man, mankind, manhood, etc.
2.
Having a similar sound, but different orthography and different meaning; -- said of certain words, as all and awl; hair and hare, etc.