baby tears vs baby's tears

baby tears and baby's tears both are nouns.

Word	Noun	Adjective	Verb	Adverb
baby tears	Yes	No	No	No
baby's tears	Yes	No	No	No

As nouns, baby tears and baby's tears are synonyms defined as:

baby tears and baby's tears: prostrate or creeping Corsican herb with moss-like small round short-stemmed leaves

Other synonyms of baby tears include Helxine soleirolia, Soleirolia soleirolii.

baby tears (noun)	baby's tears (noun)
prostrate or creeping Corsican herb with moss-like small round short-stemmed leaves	prostrate or creeping Corsican herb with moss-like small round short-stemmed leaves