scribble vs scribbler

scribble and scribbler both are nouns.

Word	Noun	Adjective	Verb	Adverb
scribble	Yes	No	Yes	No
scribbler	Yes	No	No	No

scribble (noun)	scribbler (noun)
an aimless drawing	a writer whose handwriting is careless and hard to read
poor handwriting	informal terms for journalists

scribble (verb)	scribbler (verb)
write down quickly without much attention to detail
write carelessly