itty-bitty vs teeny-weeny

itty-bitty and teeny-weeny both are adjectives.

Word	Noun	Adjective	Verb	Adverb
itty-bitty	No	Yes	No	No
teeny-weeny	No	Yes	No	No

As adjectives, itty-bitty and teeny-weeny are synonyms defined as:

Other synonyms of itty-bitty include bittie, bitty, itsy-bitsy, teensy-weensy, teensy, teentsy, teeny, wee, weensy, weeny.

itty-bitty (adjective)	teeny-weeny (adjective)
(used informally) little or tiny	(used informally) little or tiny