This is the 8181st most frequent Japanese word.
岩村
"Iwamura" is a Japanese surname or place name meaning "rock village."
In this sentence, 岩村 refers to a person's surname.
岩村さんは医者です。
Mr./Ms. Iwamura is a doctor.
Here, 岩村 represents the name of a town or place.
岩村町はとても静かです。
Iwamura Town is very peaceful.
In this instance, 岩村 specifies a geographical feature, such as a ridge or area.