| O | definition | example sentence |
| obedience | doing what someone tells you to do | Military commanders expect obedience from their troops. |
| obesity | the condition of being too fat | Diseases caused by obesity kill millions of people every year. |
| oil | a dark liquid from under the ground | Saudi Arabia makes a lot of money from selling oil. |
| oxygen | a chemical element in air and water (symbol O) | When you breathe in, your body gets oxygen from the air. |
| P | definition | example sentence |
| paper | material used for writing on or wrapping | How many sheets of paper do you need? |
| passion | a very strong feeling | People on both sides of the debate spoke with passion. |
| pasta | an Italian food made from flour and water | Spaghetti, ravioli and lasagna are different types of pasta. |
| patience | the ability to wait without getting angry or upset | After waiting an hour to see a doctor, I ran out of patience and left. |
| permission | the right to do something you can't normally do | You'll need permission from the boss if you want to leave early. |
| physics | the scientific study of matter and energy | These new theories in physics are difficult to understand. |
| poetry | literature in the form of poems and verses | Have you ever read the poetry of Walt Whitman? |
| pollution | waste products that damage the environment | Most air pollution comes from cars and factories. |
| poverty | the state of being very poor | Millions of people are still living in poverty. |
| power | the ability to control people or things | The police have the power to arrest and charge people. |
| pride | the feeling you have when you, or someone close to you, does something special | We watched with pride as our son was awarded his medal. |
| production | the process of making or growing things | Rice production has increased this year. |
| progress | improvement or development | I hope you're making progress in your English. |
| pronunciation | the sounds made when speaking a language | Your pronunciation of English is excellent. |
| psychology | the study of the mind | My sister wants to study psychology. |
| publicity | attention given to something in newspapers, TV, etc. | The royal wedding got a lot of publicity in the media. |
| punctuation | small marks used when writing, like commas and question marks | Good punctuation will make your writing easier to read. |