data converter vs convertor

data converter and convertor both are nouns.

Word	Noun	Adjective	Verb	Adverb
data converter	Yes	No	No	No
convertor	Yes	No	No	No

As nouns, convertor is a hypernym of data converter; that is, convertor is a word with a broader meaning than data converter:

data converter: converter for changing information from one code to another
convertor: a device for changing one substance or form or state into another

Other hypernyms of data converter include converter.

data converter (noun)	convertor (noun)
converter for changing information from one code to another	a device for changing one substance or form or state into another