Εννοια

1. to change (to cause to be different)
2. (colloquial) to change; to exchange (to break a banknote or coin)
3. to change (to replace something or someone with something or something)
4. to change (to become different than before)
5. to change (to be replaced with someone or something else)
6. to change each other (to replace one another)
7. to change; to be changed (to undergo change from an external source)