Strong’s Greek
G1645 — elaphros
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐλαφρός
elaphros — pronounced el-af-ros'
probably akin to 1643 and the base of 1640; light, i.e. easy:--light. see GREEK for 1643 see GREEK for 1640
2 occurrences in the KJV.
Matthew 11:30
For my yoke is easy, and my burden is light.
2 Corinthians 4:17
For our light affliction, which is but for a moment, worketh for us a far more exceeding and eternal weight of glory;