John 14:27

^A “peace” = eirene. Perhaps from eiro (to join, tie together to form a whole). This is one, peace, quietness, rest, peace of mind, harmony. Peace was a common farewell among Jews (i.e. shalom) and this well-wishing included a blessing of health and wholeness for the individual. This word also indicates wholeness and well-being – when everything that is essential is joined together properly. This is peace literally or figuratively. By implication, it is prosperity (but not in the sense of excessive wealth. Prosperity would have meant having enough from day to day.)
^B “leave” = aphiemi. From apo (from, away from) + hiemi (to send). This is send away, release, permit, forgive, allow to depart, discharge, or send forth.
^C “give” = didomi. To give, offer, place, bestow, deliver. This is give in a literal or figurative sense.

^D “world” = kosmos. Perhaps from the base of komizo (to carry, convey, recover); from komeo (to take care of). This is order, the world, the universe, including its inhabitants. Literally, this is something that is ordered so it can refer to all creation. It can also refer to decoration in the sense that something is better ordered and, thus, made more beautiful. This is where “cosmos” and “cosmetics” come from.
^E “hearts” = kardia. Literally the heart, but figuratively mind, character, inner self, will, intention, thoughts, feelings. Also, the center of something. The word heart is only used figuratively in the Old and New Testaments. This is where “cardiac” comes from.
^F “be troubled” = tarasso. 18x in NT. This is trouble, agitate, stir up. It is motion back and forth, creating inner turmoil or confusion, roiling water.
^G “be afraid” = deiliao. 1x in NT. From deilia (cowardice, reticence); from deilos (fearful, timid, faithless, fear of losing); {from deos (fear, reverence) or deido (to fear)}. This is to live in fear, be timid. It is living with an intense fear of consequences.