Deadly - Vine's Expository Dictionary of New Testament Words
Deadly
[ 1,,G2287, thanatephoros ]lit., death-bearing, deadly" (thanatos, "death," phero, "to bear"), is used in James 3:8. In the Sept., Numbers 18:22; Job 33:23.
[ 2,,G2286, thanasimos ]
from thanatos (See No. 1), "belonging to death, or partaking of the nature of death," is used in Mark 16:18.