fail vs bobble

fail is not a noun while bobble is a noun.

Word	Noun	Adjective	Verb	Adverb
fail	No	No	Yes	No
bobble	Yes	No	Yes	No

As verbs, bobble is a hyponym of fail; that is, bobble is a word with a more specific, narrower meaning than fail:

fail (noun)	bobble (noun)
	the momentary juggling of a batted or thrown baseball

fail (verb)	bobble (verb)
stop operating or functioning	make a mess of, destroy or ruin
deteriorate
prove insufficient
disappoint, prove undependable to; abandon, forsake
become bankrupt or insolvent; fail financially and close
be unsuccessful
fail to get a passing grade
fail to do something; leave something undone
judge unacceptable
be unable
fall short in what is expected