A noun is a part of speech used to name persons, things animals, places, ideas or events.
There are different types of nouns: Concrete, Abstract, Count, Mass, Collective, Common, and Proper
In the sentence:
Looks: Common Noun. Generic name of things.
Attention: Abstract Noun. You cannot perceive through your five senses.
Sense: Abstract noun.
Person: Common Noun
Stages : Abstract Noun.