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"Señora" is a form of "señora", a noun which is often translated as "woman". "Ama" is a form of "ama", a noun which is often translated as "wet nurse". Learn more about the difference between "señora" and "ama" below.
la señora()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
3. (honorific)
la ama()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).