camion vs motortruck

camion and motortruck both are nouns.

Word	Noun	Adjective	Verb	Adverb
camion	Yes	No	No	No
motortruck	Yes	No	No	No

As nouns, motortruck is a hypernym of camion; that is, motortruck is a word with a broader meaning than camion:

Other hypernyms of camion include truck.

camion (noun)	motortruck (noun)
a low heavy horse cart without sides; used for haulage	an automotive vehicle suitable for hauling
a large truck designed to carry heavy loads; usually without sides