wordstock

noun
UK /ˈwɜːdstɒk/
US /ˈwɜːrdstɑːk/

All the words that a person knows and can use.

Reading every day helps build a child's wordstock.


OTHER MEANINGS

2. The complete set of words used in a particular language or field.

The wordstock of computer science grows every year.

3. A stored collection or inventory of words, as in a database or dictionary.

The app's wordstock includes over a million entries.

4. The words available to a writer or speaker for a specific purpose.

Her poetic wordstock is rich with imagery.