Growing your vocabulary
When you’re learning vocabulary, it can be helpful to learn more than one part of speech in the same word family. Noticing other words in a word family can really help to grow your vocabulary.
Look at the "Word Family" tree. How many words can you see in the act word family? What parts of speech are they?

Parts of speech
In this unit we used the words secure and security and cybersecurity. They belong to the same word family but are different parts of speech.
What part of speech is security?
What part of speech is secure?
Find the word families
Look at the first line of the table below, do you know what these parts of speech mean: noun, verb, adjective, adverb? Can you give some examples of each?
Notice the parts of the word in bold. Those are the stressed syllables. Stressed syllables are pronounced a little bit higher, louder, and longer than unstressed syllables.
Drag the words to the right to the box that matches the part of speech. As you do it, try saying the word out loud with appropriate word stress.
Notice: In American English, the suffix is spelled with a “z”, but in British/Australian/New Zealand English (and many others), it’s spelled with an “s”. Like this:

Open the Exercise below and use the word families chart to fill in the crossword.