4.So, a " pod" is anything that holds or contains something else, but is used in English – outside of the context of podcasting – usually just to describe the vegetable or a part of the vegetable: the peapod.
5.We don't use this word very often in English other than some very specific terms such as " peapod." A " pea (pea) – note the spelling – pod" is what the little green vegetable, what we call " peas, " grow in.