There is a question in my Embryology textbook's exercise that asks about an organizer and inducer substance. I found their definitions and now I am wondering if they are the same things?
According to Merriam-Webster they are synonyms:
[An organizer is] a region of a developing embryo or a substance produced by such a region that is capable of inducing a specific type of development in undifferentiated tissue —called also inductor
However, I think the most commonly used terminology here is that the organizer [used as a noun] induces [used as a verb] the differentiation of embryonic tissue. For example, consider the following quote (Arizona State University):
The Spemann-Mangold organizer, also known as the Spemann organizer, is a cluster of cells in the developing embryo of an amphibian that induces development of the central nervous system