Not all K of N schemes are "secret sharing" (the most well known ones aren't), though I agree that for this will case you probably want a secret sharing algorit

Not all K of N schemes are "secret sharing" (the most well known ones aren't), though I agree that for this will case you probably want a secret sharing algorithm and not say, an erasure code (as you want the property of zero information transfer); however, certainly not all secret sharing algorithms are Shamir's specific secret sharing algorithm.