What is the difference between casa, caso, casi, and casar, and how can I remember them?

Question

What is the difference between caso, case, casa, and casar, and how can I remember them?

Answer 1

You need to give context with word. For instance, look at the word caso below.

Caso

Also case can be an English word or the first person and third person present subjunctive of the verb casar, to marry, which is also on your list. Please give a little more thought to your questions.

Answer 2

Don't forget acaso.