A — 1: καθαρός
(Strong's #2513 — Adjective — katharos — kath-ar-os' )

"free from impure admixture, without blemish, spotless," is used (a) physically, e.g., Matthew 23:26; 27:59; John 13:10 (where the Lord, speaking figuratively, teaches that one who has been entirely "cleansed," needs not radical renewal, but only to be "cleansed" from every sin into which he may fall); John 15:3; Hebrews 10:22; Revelation 15:6; 19:8,14; 21:18,21; (b) in a Levitical sense, Romans 14:20; Titus 1:15 , "pure;" (c) ethically, with the significance free from corrupt desire, from guilt, Matthew 5:8; John 13:10,11; Acts 20:26; 1—Timothy 1:5; 3:9; 2—Timothy 1:3; 2:22; Titus 1:15; James 1:27; blameless, innocent (a rare meaning for this word), Acts 18:6; (d) in a combined Levitical and ethical sense ceremonially, Luke 11:41 , "all things are clean unto you." See CLEAR , C, Note (2), PURE.

B — 1: καθαρίζω
(Strong's #2511 — Verb — katharizo — kath-ar-id'-zo )

akin to A, signifies (1) "to make clean, to cleanse" (a) from physical stains and dirt, as in the case of utensils, Matthew 23:25 (figuratively in Matthew 23:26 ); from disease, as of leprosy, Matthew 8:2; (b) in a moral sense, from the defilement of sin, Acts 15:9; 2—Corinthians 7:1; Hebrews 9:14; James 4:8 , "cleanse" from the guilt of sin, Ephesians 5:26; 1—John 1:7; (2) "to pronounce clean in a Levitical sense," Mark 7:19 , RV; Acts 10:15; 11:9; "to consecrate by cleansings," Hebrews 9:22,23; 10:2 . See PURGE , PURIFY.

B — 2: διακαθαρίζω
(Strong's #1245 — Verb — diakatharizo — dee-ak-ath-ar-id'-zo )

"to cleanse thoroughly," is used in Matthew 3:12 , RV.

John 15:2PURGELuke 3:17PURGE
C — 1: καθαρισμός
(Strong's #2512 — Noun Masculine — katharismos — kath-ar-is-mos' )

akin to A, denotes "cleansing," (a) both the action and its results, in the Levitical sense, Mark 1:44; Luke 2:22 , "purification;" 5:14, "cleansing;" John 2:6; 3:25 , "purifying;" (b) in the moral sense, from sins, Hebrews 1:3; 2—Peter 1:9 , RV, "cleansing." See PURGE , PURIFICATION , PURIFYING.

C — 2: καθαρότης
(Strong's #2514 — Noun Feminine — katharotes — kath-ar-ot'-ace )

akin to B, "cleannes, purity," is used in the Levitical sense in Hebrews 9:13 , RV, "cleanness." See PURIFY.

2—Peter 2:18