Seed plant and Vascular plant

Seed plant noun - Plant that reproduces by means of seeds not spores.

Vascular plant and seed plant are semantically related. In some cases you can use "Vascular plant" instead a noun phrase "Seed plant".

Vascular plant noun - Green plant having a vascular system: ferns, gymnosperms, angiosperms.

Seed plant and vascular plant are semantically related. Sometimes you can replace phrase "Seed plant" with "Vascular plant", this phrases are similar.