dysplasia vs anaplasia

dysplasia and anaplasia both are nouns.

Word	Noun	Adjective	Verb	Adverb
dysplasia	Yes	No	No	No
anaplasia	Yes	No	No	No

As nouns, anaplasia is a hyponym of dysplasia; that is, anaplasia is a word with a more specific, narrower meaning than dysplasia:

dysplasia: abnormal development (of organs or cells) or an abnormal structure resulting from such growth
anaplasia: loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor

Other hyponyms of dysplasia include aplasia, fibrous dysplasia of bone, hypertrophy, hyperplasia, hypoplasia.

dysplasia (noun)	anaplasia (noun)
abnormal development (of organs or cells) or an abnormal structure resulting from such growth	loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor