Although I m-w'd "heritage" and "legacy", I still can't understand the difference between them.

If my father dies and leaves me a house, is this house my {quH} or my {'ISyar} ?

The earth which will be inherited by the poor, is a {quH} or a {'ISyar} ?

The culture of ancient rome, for the italians of today, is their {quH} or their {'ISyar} ?

Your heritage is something that comes to you out of the past. Your legacy is something you leave behind. One person's legacy can be another person's heritage. Although legacy can be used for inherited goods, it's more commonly used for a tradition or philosophy that one leaves behind. A heritage can equally be applied to goods and to tradition and ideas.

The house you inherit would be your quH. It might be considered your father's 'ISyar, but in English at least the word isn't commonly used for material goods, though it can be in legal jargon.

How people treat the Earth now are leaving their legacy, which will be the heritage of future generations.

The culture of ancient Rome is the Roman legacy and the Italian heritage.

-- 
SuStel
http://trimboli.name