superlative vs tiptop

superlative and tiptop both are nouns.

Word	Noun	Adjective	Verb	Adverb
superlative	Yes	Yes	No	No
tiptop	Yes	Yes	No	No

As nouns, superlative and tiptop are synonyms defined as:

superlative and tiptop: the highest level or degree attainable; the highest stage of development

Other synonyms of superlative include acme, elevation, height, meridian, peak, pinnacle, summit, top.

superlative (noun)	tiptop (noun)
an exaggerated expression (usually of praise)	the extreme top or summit
the superlative form of an adjective or adverb	the highest level or degree attainable; the highest stage of development
the highest level or degree attainable; the highest stage of development

superlative (adjective)	tiptop (adjective)
highest in quality	of the highest quality