sib vs relation

sib and relation both are nouns.

Word	Noun	Adjective	Verb	Adverb
sib	Yes	No	No	No
relation	Yes	No	No	No

As nouns, relation is a hypernym of sib; that is, relation is a word with a broader meaning than sib:

sib: one related by blood or origin; especially on sharing an ancestor with another
relation: a person related by blood or marriage

Other hypernyms of sib include relative.

As nouns, relation is a hypernym of sib; that is, relation is a word with a broader meaning than sib:

Other hypernyms of sib include relative.

sib (noun)	relation (noun)
one related by blood or origin; especially on sharing an ancestor with another	an abstraction belonging to or characteristic of two entities or parts together
a person's brother or sister	(usually plural) mutual dealings or connections among persons or groups
	sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur
	(law) the principle that an act done at a later time is deemed by law to have occurred at an earlier time
	an act of narration
	a person related by blood or marriage