A lexicon is a list of words that belong to a particular language (see this answer).
Is there a name for "the set of all ngrams" ? I mean the set of all consecutive words (collocations and higher order combinations) that have be written in a given language, such as all the sequences we can find in the Google Ngram Viewer.
For example, the 5-gram dataset in English (5 consecutive words) has millions++ of unique sequences and I can't find a word to name this whole set. If I had to convey the concept, I would go for something like "word sequentome" to mimic the transcriptome, or meta-lexicon that adds an extra-layer to the lexicon - but there must be a word for that.