kuài and huì

[acoustic acorn]

Is the hanzi for huì and kuài the same like in the anki deck card?

Or is the pinyin the same like in the dictionary?

Can they be used interchangeably?

Even though the pinyin is the same in the dictionary, they sound different

[cinder drum]

会 as kuai4 is only used in 会计 which is accountant

ifi it means anything else it's hui4