1.  priority(n = noun.state) precedence, precedency - status established in order of importance or urgency; "...its precedence as the world's leading manufacturer of pharmaceuticals"; "national independence takes priority over class struggle"
is a kind of high status
has particulars: back burner, front burner
Derived form verb prioritize₁

2.  priority(n = noun.attribute) antecedence, antecedency, anteriority, precedence, precedency - preceding in time;
is a kind of earliness
Antonym: posteriority
Derived forms adjective prior₁, verb prioritize₁

1.  The quality or state of being prior or antecedent in time, or of preceding something else; as, priority of application. [1913 Webster]

2.  Precedence; superior rank. Shak. [1913 Webster]

priority, n. (pl. -ies)
1 the fact or condition of being earlier or antecedent.
2 precedence in rank etc.
3 an interest having prior claim to consideration.

Derivative:
prioritize v.tr. (also -ise). prioritization n.

Etymology:
ME f. OF priorit{eacute} f. med.L prioritas -tatis f. L prior (as PRIOR)

N  precedence, coming before, the lead, le pas, superiority, importance, antecedence, antecedency, anteriority, precursor, priority, precession, anteposition, epacme, preference, preceding, precedent, antecedent, anterior, prior, before, former, foregoing, beforementioned, abovementioned, aforementioned, aforesaid, said, precursory, precursive, prevenient, preliminary, prefatory, introductory, prelusive, prelusory, proemial, preparatory, before, in advance, seniores priores, prior tempore prior jure.

N  priority, antecedence, anteriority, precedence, pre-existence, precession, precursor, the past, premises, prior, previous, preceding, precedent, anterior, antecedent, pre- existing, pre-existent, former, foregoing, aforementioned, before- mentioned, abovementioned, aforesaid, said, introductory, before, prior to, earlier, previously, afore, aforehand, beforehand, ere, theretofore, erewhile, ere then, ere now, before then, before now, erewhile, already, yet, beforehand, on the eve of, prior tempore prior jure.

N  precession, leading, heading, precedence, priority, the lead, le pas, van, precursor, leading, precedent, in advance, before, ahead, in the van, in the lead, foremost, headmost, in front, at the head, out in front, way out in front, far ahead, seniores priores, ahead of his time.

low priority, priority processing, top priority