“Bulrush” From Boyd’s Bible Dictionary:
(large rush). The bulrush (Ex. 2:3-5) is supposed to be the papyrus, from which paper was made (Job 8:11).
“Rush” From Boyd’s Bible Dictionary:
(reed). [REED.]
Strong’s Dictionary of Hebrew Words:
Meaning:
from 1572; properly, an absorbent, i.e. the bulrush (from its porosity); specifically the papyrus