What does the "hào" mean in "àihào" for "hobby"?
好
[粵] hou2 | [國] hao3
(1) [adj] good; fine; nice | [ant] 壞
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好
[粵] hou3 | [國] hao4
[v] like; love; be fond of
[v] be liable to; be likely to
Example:
好(hao4)酒= like to drink
好(hao4)賭= like to gamble

愛好= 'love and like' = interest/ hobby