sandbag vs sandbagger

sandbag and sandbagger both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandbag	Yes	No	Yes	No
sandbagger	Yes	No	No	No

sandbag (noun)	sandbagger (noun)
a bag filled with sand; used as a weapon or to build walls or as ballast	someone who deceives you about his true nature or intent in order to take advantage of you

sandbag (verb)	sandbagger (verb)
protect or strengthen with sandbags; stop up
downplay one's ability (towards others) in a game in order to deceive, as in gambling
hit something or somebody as if with a sandbag
treat harshly or unfairly
compel by coercion, threats, or crude means