Relative pronouns - relate clauses to nouns or other pronouns in the sentence. These pronouns are that, what, which, who, whom, whose, whichever, whoever, and whomever .
Interrogative pronouns - are used for introducing questions. These are the pronouns what, which, who, whom, and whose .
-What do you think perturbed the players during the basketball game?
Adjective + noun - The old book sat on the dusty shelf.
noun + noun - She placed the vase of flowers on the coffee table.
adverb + verb - He quickly ran to catch the bus.
adverb ( -ly ending) + adjective) - The sunset was incredibly beautiful.
adverb + adverb - The traffic moved extremely slowly on the congested highway.