Olds is a derived term of old.
As nouns the difference between old and olds
is that
old is people who are old; old beings; the older generation; usually used with
the while
Olds is {{cx|informal|lang=en}} An Oldsmobile.
As an adjective old
is of an object, concept, relationship, etc., having existed for a relatively long period of time.
As a proper noun Olds is
{{surname}.