Yáʼátʼééh is a verb that means "he/she/it is good". In another lesson, there is the phrase "bił yáʼátʼééh", meaning "it is good with him" = "he likes it". Shił yáʼátʼééh = I like it.
So is yá'át'ééh both hello and good, just good with good also being the standard greeting, or another meaning? I like knowing the literal translation, it helps me understand it.