tipper vs dumper

tipper and dumper both are nouns.

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

As nouns, tipper and dumper are synonyms defined as:

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

tipper (noun)	dumper (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
a person who leaves a tip