irritation vs sexual activity

irritation and sexual activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
irritation	Yes	No	No	No
sexual activity	Yes	No	No	No

irritation (noun)	sexual activity (noun)
unfriendly behavior that causes anger or resentment	activities associated with sexual intercourse
the act of troubling or annoying someone
an uncomfortable feeling of mental painfulness or distress
a sudden outburst of anger
the psychological state of being irritated or annoyed
the neural or electrical arousal of an organ or muscle or gland
(pathology) abnormal sensitivity to stimulation