Strong’s Greek Lexicon Search Results
4245. presbuteros pres-boo’-ter-os comparative of presbus (elderly); older; as noun, a senior; specially, an Israelite Sanhedrist (also figuratively, member of the celestial council) or Christian “presbyter”:— elder(-est), old.
2409. hiereus hee-er-yooce’ from 2413; a priest (literally or figuratively):—(high) priest.
Sorry, but Strong’s doesn’t cut it for me. You need a Catholic concordance.