Noun meaning "something that stays the same"
What is a word for "something that stays the same"?
Like an antonym for "a change".
Similarity? Continuity? Sounds off.
Ex:
While ABC was a change, XYZ was a __.
This quarter, while ABC changed, XYZ was a __.
(To mean that XYZ stayed the same)
You can use constant
something invariable or unchanging
So you get
While ABC was a change, XYZ was a constant.