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2. - (verb) To make sure a rule, law, or agreement is followed.
6. - (noun) A business or organization; also a group of people together.
7. - (verb) To put something under water or another liquid.
8. - (noun) An underground railway system used for transportation.
11. - (verb) To keep someone or something safe from harm.
12. - (verb) To help something grow, improve, or move forward.
13. - (verb) To join two or more things together.
14. - (verb) To make it possible for someone to do something.
16. - (noun) A person or organization that supplies something.
17. - (noun) The total before all amounts are added together.
18. - (noun) A smaller group that is part of a larger group.
19. - (verb) To push or move something forward.
20. - (noun) A substance made from two or more elements chemically joined together; (verb) to combine things together.

1. - (verb) To make something bigger.
3. - (verb) To give support, confidence, or hope to someone.
4. - (noun) A friend, partner, or companion.
5. - (verb) To put someone or something at risk of harm.
8. - (noun) Words shown at the bottom of a screen that translate or represent speech; also a secondary title.
9. - (verb) To press something into a smaller space.
10. - (noun) A person who spends time with another person; a friend.
11. - (noun) Movement toward a goal or improvement over time; (verb) to move forward or improve.
14. - (verb) To give someone responsibility for something.
15. - (verb) To suggest an idea, plan, or solution.
18. - (noun) A vessel that can travel underwater.