phanerogam vs seed plant

phanerogam and seed plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
phanerogam	Yes	No	No	No
seed plant	Yes	No	No	No

As nouns, phanerogam and seed plant are synonyms defined as:

phanerogam and seed plant: plant that reproduces by means of seeds not spores

Other synonyms of phanerogam include spermatophyte.

phanerogam (noun)	seed plant (noun)
plant that reproduces by means of seeds not spores	plant that reproduces by means of seeds not spores