I knew that and I didn't know that. Whenever one starts learning about Jesus, it is explained by referencing the Old Testament. I may not of learned the word--typology--but I was hearing, learning, and doing it. And I probably was introduced to the word, typology, itself. But the term didn't stick. I never had occasion to use it. Until now.
Typology is helping me understand Mary. I have a new understanding of her and reverence this typology of Mary.