tied vs fastened

tied and fastened both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tied	No	Yes	No	No
fastened	No	Yes	No	No

As adjectives, tied and fastened are synonyms defined as:

tied (adjective)	fastened (adjective)
fastened with strings or cords	firmly closed or secured
closed with a lace	furnished or closed with buttons or something buttonlike
bound or secured closely	fastened with strings or cords
of the score in a contest
bound together by or as if by a strong rope; especially as by a bond of affection