Student or Learner
Is the word "and" a comparison signal? If so, what would be an example to show this, "Apples and pears?"?
"And" is a conjunction.
There is a common expression that expresses that you can't really compare dissimilar things. It is that "you're comparing apples and oranges."
This idea is often abbreviated as simply "apples and oranges," but that doesn't make "and" a comparison word in general.
compare apples and oranges - Idioms - by the Free Dictionary, Thesaurus and Encyclopedia.