Illiteracy (noun)

1. The state of being unable to read or write.
2. The lack of education or knowledge about a particular subject or activity.

Origin:

Mid 16th century: from latin illitteratus, from in- "not" + litter "letters".

Examples:

1. Illiteracy is a major problem in many developing countries.
2. The high rate of illiteracy in the community is a concern.
3. The program aimed to reduce illiteracy among adults.
4. The digital illiteracy of the older generation was a challenge.
5. The financial illiteracy of the population is a concern.