むすこさん
息子さん
(someone else's) son
Note
[息子さん]…Oさんの「息子さん」、私の「息子」
[musuko san]…refers to somebody else's son, while "musuko" refers to one's own son.
[息子さん]…Oさんの「息子さん」、私の「息子」
[musuko san]…refers to somebody else's son, while "musuko" refers to one's own son.