@Zetherin,
Zetherin;115041 wrote:Why wouldn't "2+2" and "4" be synonymous?
They are mathematically equivalent, but they
mean different things. "4" is a number, and "2+2" involves adding two numbers together, neither of which is 4. Look
here and
here for the difference between "equivalent" and "synonym".
To appreciate the difference between mathematical equivalence and being synonymous, you might want to look at any standard math problem. Typically, one looks for an answer that is mathematically equivalent to something else, but does not have the same meaning. If it did have the same meaning, one would not need to work out the problem.
Zetherin;115041 wrote:And I'm not quite sure being synonymous necessarily means having the same meaning. "Baking" is a synonym for "hot" according to my source. These words have similar meanings, but not the same meanings.
I don't know what your source is, but ordinarily, "baking" and "hot" are not regarded as synonyms.