This is the 7974th most frequent Japanese word.
大川
"大川" means "big river" or "large river" in English.
Here, '大川' is used as a name or identifier of a specific river, indicating its geographic or locational identity.
大川は日本の河川の一つです。
Ōkawa is one of the rivers in Japan.
In this sentence, '大川' is used as a personal family name, signifying its usage in identifying individuals.
彼は大川さんに会いました。
He met Mr. Ōkawa.
Here, '大川' is used as a descriptive term meaning 'large river,' emphasizing its generic use in referring to a type of river.