Answer:

rhyming

Answer	Crossword Clue
RHYMING	Seuss hallmark
RHYMING	Like "gloom" and "doom"
RHYMING	Like "yea" and "nay"

RHYMING	Pairing Huey with Dewey
RHYMING	Being poetic

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.