On gloss:

cteki
x1 is a tax/levy/duty on goods/services/event x2 levied against x3 by authority/collector x4.

On affix form:

tanxe
x1 is a box/carton/trunk/crate for contents x2, and made of material x3.

In definition:

frankobolo
x1 is a document used to prepay service x2 like postage costs, tax, license fees; x1 is a postage stamp used to pay service x2

In notes:

kraili
x1 (abstraction) is/should be a legal/moral right/entitlement/guarantee, normative principle, protection, privilege, power, trait, treatment, duty/obligation, opportunity, freedom, dignity/point of respect, ability, point of equality, natural guarantee, natural ability, inherent property of x2 according to judge/norm/standard x3.