Here are the possible solutions for platform or something that appears four times in this puzzle clue
Answer
Clue
Relevancy
soapbox
Clue
Platform ... or something that appears four times in this puzzle?
diacritic
Clue
Mark that appears four times in this puzzle (hint: the baseball player who's the answer to this puzzle uses one, too)
Definition
distinguishing
rudolph
Clue
Christmas figure whose prominent feature appears four times in this puzzle
four
Clue
Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)
Definition
the cardinal number next above three
ozone
Clue
Triatomic gas in a thinning layer ... and, symbolically, what appears in this puzzle's four longest answers
Definition
an allotropic form of oxygen present in the atmosphere
winbyanose
Clue
Edge out, and a description of what appears four places in this puzzle
hourlyghost
Clue
Specter that appears twenty-four times a day?
abe
Clue
Puzzle theme which appears nine more times in the grid