ham vs radio operator

ham and radio operator both are nouns.

Word	Noun	Adjective	Verb	Adverb
ham	Yes	No	Yes	No
radio operator	Yes	No	No	No

As nouns, radio operator is a hypernym of ham; that is, radio operator is a word with a broader meaning than ham:

ham (noun)	radio operator (noun)
meat cut from the thigh of a hog (usually smoked)	someone who operates a radio transmitter
an unskilled actor who overacts
a licensed amateur radio operator

ham (verb)	radio operator (verb)
exaggerate one's acting