Flock - Vine's Expository Dictionary of New Testament Words
Flock[ 1,,G4167, poimne ]
akin to poimen, a shepherd," denotes "a flock" (properly, of sheep), Matthew 26:31; Luke 2:8; 1 Corinthians 9:7; metaphorically, of Christ's followers, John 10:16, RV, for the erroneous AV, "fold." What characterizes Christ's sheep is listening to His voice, and the "flock" must be one as He is one.
[ 2,,G4168, poimnion ]
possibly a diminutive of No. 1, is used in the NT only metaphorically, of a group of Christ's disciples, Luke 12:32; of local churches cared for by elders, Acts 20:28-Acts 20:29; 1 Peter 5:2-3.