What do aloha and mahalo mean?
According to Wiki, it’s usually used as a greeting method in Hawaiian, the word itself means things like happiness, joy, compassion or peace and things like that, and can be used in conjunction with other Hawaiian words to specifically signify good night, good evening or whatever. From the same article, Mahalo is supposed to mean thank you, or some other sort of appreciative response, which just like Aloha, can be used and linked with other words to specify certain things, like you saved my life, or saved me some money.