shout out vs ululate

shout out and ululate both are verbs.

Word	Noun	Adjective	Verb	Adverb
shout out	No	No	Yes	No
ululate	No	No	Yes	No

As verbs, ululate is a hyponym of shout out; that is, ululate is a word with a more specific, narrower meaning than shout out:

Other hyponyms of shout out include hollo, hurrah, halloo, whoop, pipe, pipe up, shriek, shrill, howl, roar, wail, yaup, yawl, screak, screech, skreak, skreigh, squawk.

shout out (verb)	ululate (verb)
utter a sudden loud cry	emit long loud cries
utter in a very loud voice