Why cats sometimes make baby cry sound?

They do make both "baby cries" and screaming at night. yeah I know when they scream it is most likely they are getting into a fight. I just don't know about what the "baby cries" mean.

They indeed can understand quite some human vocabulary. I have read it somewhere that the cats can understand some of the words from the specific language the owner speak. If the cat is adapted by another family who speak a different language, then the cat will slowly forget about the original owner's language and start to get used to the new language.