饼 (bǐng) refers to a flat, round food item such as a biscuit, pancake, or flatbread. It is a broad term covering many types of flat baked or fried foods in Chinese cuisine, as in 一种饼 (a type of flatbread).
这种饼是用面粉和葱花做的,特别香。
zhè zhǒng bǐng shì yòng miànfěn hé cōnghuā zuò de, tèbié xiāng.
This kind of flatbread is made with flour and chopped scallions, and it's especially fragrant.
早饭我买了两个饼和一杯豆浆。
zǎofàn wǒ mǎi le liǎng gè bǐng hé yī bēi dòujiāng.
For breakfast I bought two flatbreads and a cup of soy milk.
奶奶做的南瓜饼是我小时候最爱吃的。
nǎinai zuò de nánguā bǐng shì wǒ xiǎoshíhou zuì ài chī de.
The pumpkin cakes Grandma made were my favorite food when I was little.