The different syntactic behavior of the negative particle "not" and the negative inflectional suffix "-n't" in the interrogative constructions is also worth noting.
Other word (sub-) classes include interrogative pronouns, conjunctions (which take participles), spatials, and particles, the last being rather numerous.
Gender agreement, along with that for person and number, occurs with all adjectives, numerals and interrogative pronouns and the subject and object of verbs.
