Net - Vine's Expository Dictionary of New Testament Words
Net[ 1,,G293, amphiblestron ]
lit., something thrown around" (amphi, "around," ballo, "to throw"), denotes "a casting net," a somewhat small "net," cast over the shoulder, spreading out in a circle and made to sink by weights, Matthew 4:18 (in some mss. in Mark 1:16, the best have the verb amphiballo alone).
[ 2,,G1350, diktuon ]
a general term for a "net" (from an old verb diko, "to cast:" akin to diskos, "a quoit"), occurs in Matthew 4:20-Matthew 4:21; Mark 1:18-Mark 1:19; Luke 5:2, Luke 5:4-Luke 5:6; John 21:6, John 21:8, John 21:11 (twice). In the Sept. it was used for a "net" for catching birds, Proverbs 1:17, in other ways, e.g., figuratively of a snare, Job 18:8; Proverbs 29:5.
[ 3,,G4522, sagene ]
denotes "a dragnet a seine;" two modes were employed with this, either by its being let down into the water and drawn together in a narrowing circle, and then into the boat, or as a semicircle drawn to the shore, Matthew 13:47, where Nos. 1 and 2 would not have suited so well. The Greek historian Herodotus used the corresponding verb sageneuo of a device by which the Persians are said to have cleared a conquered island of its inhabitants.