Growth, noun

1. the act or process, or a manner of growing; development; gradual increase.
2. size or stage of development: It hasn't yet reached its full growth.
4. development from a simpler to a more complex stage: the growth of ritual forms.
5. development from another but related form or stage: the growth of the nation state.
6. something that has grown or developed by or as if by a natural process: a growth of stubborn weeds.