primary dentition vs dentition

primary dentition and dentition both are nouns.

Word	Noun	Adjective	Verb	Adverb
primary dentition	Yes	No	No	No
dentition	Yes	No	No	No

As nouns, dentition is a hypernym of primary dentition; that is, dentition is a word with a broader meaning than primary dentition:

primary dentition: dentition of deciduous teeth
dentition: the kind and number and arrangement of teeth (collectively) in a person or animal

Other hypernyms of primary dentition include teeth.

primary dentition (noun)	dentition (noun)
dentition of deciduous teeth	the kind and number and arrangement of teeth (collectively) in a person or animal
	the eruption through the gums of baby teeth