retentivity vs retention

retentivity and retention both are nouns.

Word	Noun	Adjective	Verb	Adverb
retentivity	Yes	No	No	No
retention	Yes	No	No	No

As nouns, retentivity and retention are synonyms defined as:

Other synonyms of retentivity include retentiveness.

As nouns, retentivity and retention are synonyms defined as:

retentivity and retention: the power of retaining and recalling past experience

Other synonyms of retentivity include memory, retentiveness.

retentivity (noun)	retention (noun)
the power of retaining liquid	the act of retaining something
the property of retaining possessions that have been acquired	the power of retaining liquid
the power of retaining and recalling past experience	the power of retaining and recalling past experience