chantlike vs singsong

chantlike is not a noun while singsong is a noun.

Word	Noun	Adjective	Verb	Adverb
chantlike	No	Yes	No	No
singsong	Yes	Yes	Yes	No

As adjectives, chantlike and singsong are synonyms defined as:

chantlike and singsong: uttered in a monotonous cadence or rhythm as in chanting

Other synonyms of chantlike include intoned.

chantlike (noun)	singsong (noun)
	informal group singing of popular songs
	a regular and monotonous rising and falling intonation

chantlike (adjective)	singsong (adjective)
uttered in a monotonous cadence or rhythm as in chanting	uttered in a monotonous cadence or rhythm as in chanting

chantlike (verb)	singsong (verb)
	speak, chant, or declaim in a singsong
	move as if accompanied by a singsong