The document discusses the words "too" and "enough". It states that "too" means more than necessary, wanted or expected and is used with adjectives or adverbs to express excess. Examples include "the exercise is too difficult" and "don't write too quickly". "Enough" expresses adequacy and is used after adjectives/adverbs like "she is not old enough" or before nouns like "I haven't got enough money". Both "too" and "enough" can be used to indicate something is too much or not enough for someone or something.