yodeling vs singing

yodeling and singing both are nouns.

Word	Noun	Adjective	Verb	Adverb
yodeling	Yes	No	No	No
singing	Yes	Yes	No	No

As nouns, singing is a hypernym of yodeling; that is, singing is a word with a broader meaning than yodeling:

yodeling: singing by changing back and forth between the chest voice and a falsetto
singing: the act of singing vocal music

Other hypernyms of yodeling include vocalizing.

yodeling (noun)	singing (noun)
singing by changing back and forth between the chest voice and a falsetto	the act of singing vocal music
	disclosing information or giving evidence about another

yodeling (adjective)	singing (adjective)
	smooth and flowing