noun
Refers to one's own grandfather or someone else's grandfather. The kanji お祖父さん is sometimes used for this meaning.
おじいさんは毎朝散歩に行きます。
My grandfather goes for a walk every morning.
あの子はお
That child wrote a letter to their grandfather.
noun
elderly man; old man
A respectful or affectionate term for an elderly man, not necessarily related. The kanji お爺さん is sometimes used for this meaning.
公園でおじいさんが将棋を指していた。
An old man was playing shogi in the park.
親切なおじいさんが道を教えてくれた。
A kind elderly man gave me directions.