This is the 3027th most frequent Chinese word.
袋
Bag; sack.
In this sentence, '袋子' refers to a container used for holding items, translated as 'bag'.
我买了一个新的袋子。
I bought a new bag.
'袋子' here is used to refer to a specific bag being addressed in the context.
请帮我把这个袋子放在桌子上。
Please help me put this bag on the table.
'袋' is used as a modifier for '装', creating '袋装', which means 'bagged', describing the packaging style.