sensing vs looking at

sensing and looking at both are nouns.

Word	Noun	Adjective	Verb	Adverb
sensing	Yes	No	No	No
looking at	Yes	No	No	No

As nouns, looking at is a hyponym of sensing; that is, looking at is a word with a more specific, narrower meaning than sensing:

sensing: becoming aware of something via the senses
looking at: the act of directing the eyes toward something and perceiving it visually; look

Other hyponyms of sensing include look, looking, hearing, listening, lipreading, taste, tasting, smell, smelling.

sensing (noun)	looking at (noun)
becoming aware of something via the senses	the act of directing the eyes toward something and perceiving it visually; look
the perception that something has occurred or some state exists