toot vs tootle

toot and tootle both are nouns.

Word	Noun	Adjective	Verb	Adverb
toot	Yes	No	Yes	No
tootle	Yes	No	Yes	No

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

toot (noun)	tootle (noun)
revelry in drinking; a merry drinking party	the sound of casual playing on a musical instrument
a blast of a horn

toot (verb)	tootle (verb)
make a strident noise	play (a musical instrument) casually