trailer vs putterer

trailer and putterer both are nouns.

Word	Noun	Adjective	Verb	Adverb
trailer	Yes	No	No	No
putterer	Yes	No	No	No

As nouns, putterer is a hyponym of trailer; that is, putterer is a word with a more specific, narrower meaning than trailer:

trailer: someone who takes more time than necessary; someone who lags behind
putterer: a person who putters about

trailer (noun)	putterer (noun)
a wheeled vehicle that can be pulled by a car or truck and is equipped for occupancy	a person who putters about
a large transport conveyance designed to be pulled by a truck or tractor
an advertisement consisting of short scenes from a motion picture that will appear in the near future
someone who takes more time than necessary; someone who lags behind