long-winded vs tedious

long-winded and tedious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
long-winded	No	Yes	No	No
tedious	No	Yes	No	No

As adjectives, long-winded and tedious are synonyms defined as:

Other synonyms of long-winded include verbose, windy, wordy.

long-winded (adjective)	tedious (adjective)
using or containing too many words	using or containing too many words
	so lacking in interest as to cause mental weariness