There is no intuitive way to know that make out has anything to do with kissing, and that was my point: each (idiomatic) phrasal verb is another unique word tha

There is no intuitive way to know that make out has anything to do with kissing, and that was my point: each (idiomatic) phrasal verb is another unique word that must be memorized. They just happen to consist of two (or more!) other words.