佛 (fó) means "Buddha" and refers to the founder of Buddhism or an enlightened being. It also appears in the common expression 仿佛 (fǎngfú), meaning "as if" or "seemingly," which is unrelated to the religious meaning.
他对佛学很有研究。
Tā duì fóxué hěn yǒu yánjiū.
He has done extensive research on Buddhism.
这座寺庙里有一尊很大的佛像。
zhè zuò sìmiào lǐ yǒu yī zūn hěn dà de fóxiàng.
There is a very large Buddha statue in this temple.
奶奶每天都在家里拜佛。
nǎinai měi tiān dōu zài jiā lǐ bài fó.
Grandma prays to Buddha at home every day.