regeneration vs positive feedback

regeneration and positive feedback both are nouns.

Word	Noun	Adjective	Verb	Adverb
regeneration	Yes	No	No	No
positive feedback	Yes	No	No	No

As nouns, regeneration and positive feedback are synonyms defined as:

regeneration and positive feedback: feedback in phase with (augmenting) the input

regeneration (noun)	positive feedback (noun)
the activity of spiritual or physical renewal	feedback in phase with (augmenting) the input
forming again (especially with improvements or removal of defects); renewing and reconstituting
(biology) growth anew of lost tissue or destroyed parts or organs
feedback in phase with (augmenting) the input