half track vs military vehicle

half track and military vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
half track	Yes	No	No	No
military vehicle	Yes	No	No	No

As nouns, military vehicle is a hypernym of half track; that is, military vehicle is a word with a broader meaning than half track:

half track: a motor vehicle propelled by half tracks; frequently used by the military
military vehicle: vehicle used by the armed forces

Other hypernyms of half track include tracked vehicle.

half track (noun)	military vehicle (noun)
a track that goes around only rear wheels	vehicle used by the armed forces
a motor vehicle propelled by half tracks; frequently used by the military