Could not the content of your words been better spent answering the question.
This is like asking what's the difference between JavaScript and React. ish (some hand waving on the analogy)
The question you've asked can't really be answered? Idk what you're asking exactly.
SAS is comparable to SATA. Both can be used for HDDs. For individuals it doesn't really matter. For building huge-ass disk arrays, you might want to use SAS.