FYI: the adjective старый|ая|ое (old) has the cognate nouns старик (an old man) and старуха (an old woman)
Спасибо за информацию! It also has the cognate nouns старец (a old monk (monastic elder)) and старица (an old nun).
"That school is already very old" is not correct?
Это can be either this or that, isn't it?