What part of speech is "Nevertheless"?

1. Adjective
2. Verb
3. Conjunctive adverb
4. Preposition

“Nevertheless” is a conjunctive adverb, also called a transitional adverb. It connects two independent clauses while showing contrast or concession, similar to “however” or “nonetheless.” Conjunctive adverbs differ from coordinating conjunctions because they create a stronger break between clauses and can move within sentences. They demonstrate logical relationships and improve writing flow by linking ideas while maintaining grammatical independence.