What is an ovule? what is an embryo?

ovule: It is the part of the ovary of seed plants that contains the female germ cell and after fertilization becomes the seed. (plants)

embryo: an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization (after which it is usually termed a fetus). (in most multi cellular organisms)