pod vs pea pod

pod and pea pod both are nouns.

Word	Noun	Adjective	Verb	Adverb
pod	Yes	No	Yes	No
pea pod	Yes	No	No	No

As nouns, pea pod is a hyponym of pod; that is, pea pod is a word with a more specific, narrower meaning than pod:

pod: the vessel that contains the seeds of a plant (not the seeds themselves)
pea pod: husk of a pea; edible in some garden peas

Other hyponyms of pod include peasecod.

pod (noun)	pea pod (noun)
a detachable container of fuel on an airplane	husk of a pea; edible in some garden peas
a group of aquatic mammals
a several-seeded dehiscent fruit as e.g. of a leguminous plant
the vessel that contains the seeds of a plant (not the seeds themselves)

pod (verb)	pea pod (verb)
produce pods, of plants
take something out of its shell or pod