Yes, "baby" is a pet name.
The provided reference clearly states that "baby" is a popular pet name. In fact, it is a very common term of endearment.
According to the reference:
- In 41 out of 50 states, "babe/baby" is the most popular pet name.
- "Baby" emerged as a slang term in the 1920s and has been used as a pet name ever since.
Therefore, "baby" is a pet name used to express affection.
