Tiny
It is neither a comparative nor a superlative. It is an adjective. "Smaller" and "smallest" are the comparative and superlative forms.
Dative ; Tiny / small Comparative ; Tinier / smaller Superlative ; Tiniest / smallest
The comparative and superlative forms of small are smaller and smallest, respectively.
A comparative adjective for small is small-er and for superlativ adj. small-est so small can be both comparative and superlative (:
Comparative: uglier Superlative: ugliest
What's the comparative and superlative of the word "exact"
A comparative adjective for small is small-er and for superlativ adj. small-est so small can be both comparative and superlative (:
comparative = sadder superlative = saddest
The comparative is "stricter" and the superlative is "strictest".
Comparative: shallower Superlative: shallowest
The comparative is "wilder" and the superlative is "wildest".
The comparative is later, and the superlative is latest