translucence vs semitransparency

translucence and semitransparency both are nouns.

Word	Noun	Adjective	Verb	Adverb
translucence	Yes	No	No	No
semitransparency	Yes	No	No	No

As nouns, translucence and semitransparency are synonyms defined as:

translucence and semitransparency: the quality of allowing light to pass diffusely

Other synonyms of translucence include translucency.

translucence (noun)	semitransparency (noun)
the quality of allowing light to pass diffusely	the quality of allowing light to pass diffusely