Cases of word usage

1) the branch of mathematics in which signs and letters are used to represent quantities, as in 2A + 3A = 5A (algebra)

2) a large branch growing from the trunk of a tree (bough)

3) the branch of mathematics that deals with variable quantities (calculus)

4) a branch of physics dealing with matter in motion (dynamics)

5) a book or set of books giving information about every branch of knowledge or about one subject (encyclopedia)

6) a shoot from a branch or twig of a living tree, fixed in another tree to form a new growth (graft)

7) (the study of) the branch of knowledge dealing with the past events of a country, a continent or the world (history)

8) (a picture of) inland scenery; the branch of art dealing with this (landscape)

9) one of the parts (usually green and flat) growing from the side of a stem or branch or direct from the root of a tree, bush, plant etc (leaf)

10) a leg, arm or wing; a large branch (of a tree) (limb)