articulated lorry vs truck

articulated lorry and truck both are nouns.

Word	Noun	Adjective	Verb	Adverb
articulated lorry	Yes	No	No	No
truck	Yes	No	Yes	No

As nouns, truck is a hypernym of articulated lorry; that is, truck is a word with a broader meaning than articulated lorry:

Other hypernyms of articulated lorry include motortruck.

articulated lorry (noun)	truck (noun)
a truck consisting of a tractor and trailer together	an automotive vehicle suitable for hauling
	a handcart that has a frame with two low wheels and a ledge at the bottom and handles at the top; used to move crates or other heavy objects

articulated lorry (verb)	truck (verb)
	convey (goods etc.) by truck