Strong’s Greek
G3749 — ostrakinos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ὀστράκινος
ostrakinos — pronounced os-tra'-kin-os
from ostrakon ("oyster") (a tile, i.e. terra cotta); earthen-ware, i.e. clayey; by implication, frail:--of earth, earthen.
2 occurrences in the KJV.
2 Corinthians 4:7
But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us.
2 Timothy 2:20
But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour.