Next step: Collocations
Being able to use collocates properly is very important when you speak or write in the IELTS exam, and your skills in this area will be something the examiner is looking out for. For example, you can read in the IELTS public band descriptors for an IELTS band 7 for lexical resources (vocabulary):
“uses less common lexical items with some awareness of style and collocation.”
Therefore, to achieve a band 7 in this criteria, not only you need to be using less common words, but you also need to show that you know what other words these less common words are usually used with.
You should, therefore, try not to learn new words in isolation. Instead, you should see what other words collocate with the new word that you are learning. For example, here are some common verb-noun collocations that you may encounter every day:
To catch a cold / a bus / a fly
To make the bed / money / a noise
To do homework / the shopping / nothing.
To come late / on time / to a decision
As I said, learning words this way is much more effective than learning them in isolation. If you learn words on their own, you are prone to making mistakes when you try to use them in sentences.