1: σπουδάζω
(Strong's #4704 — Verb — spoudazo — spoo-dad'-zo )

"to make haste, to be zealous," and hence, "to be diligent," is rendered "endeavoring" in Ephesians 4:3 , AV; RV, "giving diligence." In 2—Peter 1:15 , AV, "endeavor," RV, "give diligence." Both have "endeavored" in 1—Thessalonians 2:17 . See DILIGENCE.

2: ζητέω
(Strong's #2212 — Verb — zeteo — dzay-teh'-o )

"to seek after," is translated "endeavor" in Acts 16:10 , AV, RV, "sought." See ABOUT (to be), DESIRE , INQUIRE , SEEK.