It is either Kanji Japanese (as in Chinese character) or it is just Chinese. They are the same language family at least in writing.
Since it is written with a brush I can only guess:
1. Bounce, ejecting, firing
2. Can't tell what it is by looking, never saw this character before
3. and, or the word representing the Japanese ethnic group
4. Pine, pointy leave tree
5. Sharp point, clever, brilliant, etc.
Since it is a painting with needle leaves and berries, I'd guess it is the title of the painting: berries and pine leaves, or something like that.
The way the 1st word is written makes me think it is actually Japanese Kanji. The writing style is also more Japanese than Chinese too.