tipper lorry vs dump truck

tipper lorry and dump truck both are nouns.

Word	Noun	Adjective	Verb	Adverb
tipper lorry	Yes	No	No	No
dump truck	Yes	No	No	No

As nouns, tipper lorry and dump truck are synonyms defined as:

tipper lorry and dump truck: truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity

Other synonyms of tipper lorry include dumper, tip truck, tipper, tipper truck.

tipper lorry (noun)	dump truck (noun)
truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity	truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity