I'm guessing they selected words from a large corpus of written English based on their relative frequency. It isn't surprising that there isn't any technical v

I'm guessing they selected words from a large corpus of written English based on their relative frequency. It isn't surprising that there isn't any technical vocabulary. Most technical vocabulary falls into one of the following categories: a) Acronyms b) Overloading of existing non-technical words c) Names and other proper nouns d) Phrases longer than one word There's actually an argument for excluding highly specific vocabulary (some corpuses explicitly exclude textbooks for this reason) because knowledge of them doesn't correlate as well with overall vocabulary.