He left the hostelbag and baggage. Here the underlined phrase is-

An adverbial phrase is simply a group of two or more words that functions as an adverb in a sentence.
Just as an adverb can modify a verb, adjective or another adverb, an adverbial phrase can further describe a verb, adverb or adjective.
এখানে ‘<u>bag and baggage</u>’ (তল্পিতল্পাসমেত/ মালামালসহ) phrase টি ‘left’ verb টিকে modify করছে।

তাই এটি Adverbial phrase বলে গণ্য হবে।