Collocations
Antonyms
Synonyms
Connotations
(nuances of meaning)
Homophones
Homonyms
Figures of Speech
(simile, metaphor, irony, hyperbole, personification, oxymoron, etc.)
Word Register (1)
(school, family, food, sports, religion, etc.)
Word Register (2)
(medicine, law, politics, science, finance, etc )
Foreign Words
(French, Latin, Nigerian, etc.)
Idioms
Proverbs
Word Formation
(with prefixes and suffixes)