ἀγνωσίαagnōsía

Same root

• ΑA · G1the first letter of the alphabet; figuratively, only (from its use as a numeral) the first:
• γνῶσιςgnōsis · G1108knowing (the act), i.e. (by implication) knowledge

Where it appears

Appears 2 times in the Bible.

• 1 Corinthians 15:34 Think carefully about what is right, and stop sinning. For to your shame I say that some of you don’t know God at all.
• 1 Peter 2:15 It is God’s will that your honorable lives should silence those ignorant people who make foolish accusations against you.