Although is a subordinating conjunction meaning though, even though, or in spite of the fact that. When beginning a phrase or dependent clause offering a contrast to the main sentence, although is preceded by a comma. For example, "That firm does not meet our requirements for this project, although they may be worth considering for a smaller job."
It's a gerund, although it can be used as a noun.
The phrase "in addition" is a prepositional phrase in which "in" is the preposition and "addition" is its object. This phrase, as a phrase, is not a part of speech, although it may function as one, probably an adjective or adverb.
subordinate adverb conjunction, beginning an adverb clause (synonym for "although")
adverb
what part of speech is work
"Although" is a subordinating conjunction. It is used to introduce a subordinate clause and show the relationship between the main clause and the subordinate clause.
It's a gerund, although it can be used as a noun.
The phrase "in addition" is a prepositional phrase in which "in" is the preposition and "addition" is its object. This phrase, as a phrase, is not a part of speech, although it may function as one, probably an adjective or adverb.
part of speech
The part of speech for this particular word is a noun.
subordinate adverb conjunction, beginning an adverb clause (synonym for "although")
adverb
what part of speech is work
what part of speech is beneath
Sashay is a verb. It means to walk in an exaggerated, showy manner, often with hip swaying.
"Did not" or "didn't" is a contraction of the auxiliary verb "did" and the adverb "not," forming a negative past tense construction in English.
Adjective