dumper vs tipper truck

dumper and tipper truck both are nouns.

Word	Noun	Adjective	Verb	Adverb
dumper	Yes	No	No	No
tipper truck	Yes	No	No	No

As nouns, dumper and tipper truck are synonyms defined as:

dumper and tipper 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 dumper include dump truck, tip truck, tipper, tipper lorry.

dumper (noun)	tipper 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