vascular bundle vs vascular strand

vascular bundle and vascular strand both are nouns.

Word	Noun	Adjective	Verb	Adverb
vascular bundle	Yes	No	No	No
vascular strand	Yes	No	No	No

As nouns, vascular bundle and vascular strand are synonyms defined as:

vascular bundle and vascular strand: a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem

Other synonyms of vascular bundle include fibrovascular bundle.

vascular bundle (noun)	vascular strand (noun)
a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem	a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem