Vascular strand and Vascular tissue

Vascular strand noun - A unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem.

Vascular tissue and vascular strand are semantically related. In some cases you can use "Vascular tissue" instead a noun phrase "Vascular strand".

Vascular tissue noun - Tissue that conducts water and nutrients through the plant body in higher plants.

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