This project is almost finished.

I see, I've understood the solution to that problem well.

A common noun refers to a noun that does not point to a specific person or thing.

Abstract nouns do not point to specific things.

A mass noun, or 'fukasanmeishi', refers to a noun that cannot be counted with specific numbers.

Mr. Hosoyamada is my best friend.

Korean lovegrass is a plant that is often seen in Japan.

She chose a slender dress.

If you go down this narrow path, a beautiful garden will spread out.

Her thin fingers are good at playing the piano.