collateral

nouns

a security pledged for the repayment of a loan
collateral
is a type of (narrower)
any interest in a property that secures the payment of an obligation
security interest

adjectives

descended from a common ancestor but through different lines
"cousins are collateral relatives"; "an indirect descendant of the Stuarts"
collateral, indirect
antonym
lineal
serving to support or corroborate
"collateral evidence"
collateral, confirmative, confirmatory, confirming, corroborative, corroboratory, substantiating, substantiative, validating, validatory, verificatory, verifying
accompany, concomitant
"collateral target damage from a bombing run"
collateral
is similar to
being of second rank or importance or value; not direct or immediate
"the stone will be hauled to a secondary crusher"; "a secondary source"; "a secondary issue"; "secondary streams"
secondary
situated or running side by side
"collateral ridges of mountains"
collateral
is similar to
being everywhere equidistant and not intersecting
"parallel lines never converge"; "concentric circles are parallel"; "dancers in two parallel rows"
parallel