Now it's all clear to me!=) Thank you!

Oh dear Anna, I'm sorry I have added to your confusion! Ok, I would use loft and attic interchangeably , however historically loft has non domestic/industrial connotations ( eg hayloft in a barn where the hay was stored). Nowadays though, apart from specific usage (hayloft, church loft) the words have pretty much the same meaning, and are both used in a domestic context. Personally I use the word loft more than attic, others may use attic more often :-)

Thank you very much! It explains a lot! But Susan, now I'm confused with thу word "loft":) Is it something different from an attic or they are pretty close in meaning?

In the last century, garret rooms were the poorest rooms available for rent, at the top of the building, under the roof, whereas an attic ( although also under the roof) is not specifically for living in, but rather for storage. So for example, you might hear the phrase, "a starving artist living in a garret" when talking about poor students, or artists from the last century ( and these days it has a kind of poetic, romantic nuance, although at the time there was nothing romantic about living in one!) In modern times many attics are used for living space, having been converted and these days most people would use loft, or attic for both storage and living space - the word garret has fallen out of general use ( in my part of the UK anyway) but the meaning is understood.

Well I'm American, lived in New Jersey my entire life and I don't know the word garret. I would say attic. I think maybe a lot of newer houses in the US don't even have attics, and it's been this way since the 50's maybe. Maybe even since 1910 or so. "There's a lot of old books in my attic, maybe if you look you will find something of interest to you." Garret might be Australian or used in other parts of the US or Canada, I don't think it's British though. idk