You have both of something when you have two things, together. Both means you have all of some things, when there are only two things.
The man in the picture has both hands full.
Growth is the process of growing, or something that has recently grown. For example, "look at all the new growth on the trees".
Quoth is an old-fashioned form of said or quoted. The most famous use of the word is in a poem by Edgar Allan Poe: "Quoth the raven, nevermore".
