steps vs stairs

steps and stairs both are nouns.

Word	Noun	Adjective	Verb	Adverb
steps	Yes	No	No	No
stairs	Yes	No	No	No

As nouns, steps and stairs are synonyms defined as:

steps (noun)	stairs (noun)
a flight of stairs or a flight of steps	a flight of stairs or a flight of steps
the course along which a person has walked or is walking in