pollination vs fecundation

pollination and fecundation both are nouns.

Word	Noun	Adjective	Verb	Adverb
pollination	Yes	No	No	No
fecundation	Yes	No	No	No

As nouns, fecundation is a hypernym of pollination; that is, fecundation is a word with a broader meaning than pollination:

pollination: transfer of pollen from the anther to the stigma of a plant
fecundation: creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant

Other hypernyms of pollination include fertilisation, fertilization, impregnation.

pollination (noun)	fecundation (noun)
transfer of pollen from the anther to the stigma of a plant	creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant
	making fertile as by applying fertilizer or manure