What are this character's relationships with others?
He shares a strong bond with Baba, almost a brotherly bond
He is Hassan's father, which he raises he son with more love than their is in the entire world, even placing his son on a peddle stool, believing he can do no wrong.
He also shares a strong bond with Amir, which further solidifies hes caring nature, as he treats Amir has a son, as well as a superior but holds no resentment to me.
What words or phrases does this character commonly use?
There is no specific phrase or words he constantly deploys as he he is a more reserved and reflective character, but anything he does say is generally short and polite, and always positive. This greatly supports Amir's statement when describing Ali's retaliation to all the abuse he is consistently subjected too earlier on in the book "He had found his joy, his antidote" this implies that he is a internally happy character, who is satisfied with himself and his life , which reflects on the people who trespass against him, as it suggests that only abuse him, as they have insecurities and live an unhappy life, so they have to put him down, to raise their self esteem.
What language techniques does this character commonly use?
I can't really spot any specific techniques, as we don't hear him talk that frequently.