The word vocabulary is a noun. Vocabulary means (1) a language user's knowledge of words, (2) the system of techniques or symbols serving as a means of expression (as in arts or crafts), (3) a listing of the words used in some enterprise.
The following articles and web pages elaborate on the word vocabulary.
Researchers showed that we can acquire the vocabulary of a new language during distinct phases of slow-wave sleep and that the sleep-learned vocabulary could be retrieved unconsciously following waking. ...
Science Daily. Thursday, 31 Jan 2019 11:38:37 EST.
Applying to college can be an intimidating experience for high school students. Unfortunately, the words we use can often make it more so. These six terms should be removed from our admission vocabulary in 2019.
By Brennan Barnard, Contributor. Forbes. Friday, 11 Jan 2019 05:43:00 -0500.
The visual vocabulary of fear, disgust and dread used to sell antibacterial products has brought us to a market failure that some experts posit is bigger than climate change
Norah Campbell, Cormac Deane. The Independent. Monday, 15 Oct 2018 13:45:30 +0000.