sinning vs actual sin

sinning and actual sin both are nouns.

Word	Noun	Adjective	Verb	Adverb
sinning	Yes	Yes	No	No
actual sin	Yes	No	No	No

As nouns, actual sin is a hyponym of sinning; that is, actual sin is a word with a more specific, narrower meaning than sinning:

sinning: an act that is regarded by theologians as a transgression of God's will
actual sin: a sin committed of your own free will (as contrasted with original sin)

Other hyponyms of sinning include fall, original sin, deadly sin, mortal sin, venial sin.

sinning (noun)	actual sin (noun)
an act that is regarded by theologians as a transgression of God's will	a sin committed of your own free will (as contrasted with original sin)

sinning (adjective)	actual sin (adjective)
transgressing a moral or divine law