Than is a grammatical particle analyzed as both a conjunction and a preposition in the English language. Wikipedia

Grammatical particle of the English language. Wikipedia Disambiguation

Its actually thanos Wikidata

A grammatical particle and preposition in the English language. It introduces a comparison, and as such is associated with comparatives, and with words such as more, less, and fewer. Typically, it seeks to measure the force of an adjective or similar description between two predicates. OmegaWiki