paronym
Pronunciation: /ˈparənɪm/
noun
Linguistics- a word which is a derivative of another and has a related meaning: ‘wisdom’ is a paronym of ‘wise’
- a word formed by adaptation of a foreign word: ‘preface’ is a paronym of Latin ‘prefatio’Contrasted with heteronym.

Origin:
mid 19th century: from Greek parōnumon, neuter (used as a noun) of parōnumos 'naming by modification', from para- 'beside' + onuma 'a name'