transporter vs motortruck

transporter and motortruck both are nouns.

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

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

Other hypernyms of transporter include truck.

transporter (noun)	motortruck (noun)
a moving belt that transports objects (as in a factory)	an automotive vehicle suitable for hauling
a crane for moving material with dispatch as in loading and unloading ships
a long truck for carrying motor vehicles