Thanksgiving

(Heb: give praise to God; confession; thank offering)
from (Heb: to throw/cast down; praise, confess revere or worship)
(Heb: songs of praise)
from (Heb: shout, cheer, acclamation, rejoicing)

Thanksgiving

(Gr: eucharistia[noun]: thankfulness, gratitude, grateful (to God as an act of worship))
from (Gr: eucharistos[adj]: mindful of favors, pleasing, agreeable)
from (eu): well & (charizomai): favored)
from (eucharisteö[verb]: to feel/be grateful; express gratitude)

Cup

(Gr: one's lot or experience; fate)

Thanksgiving (eucharistia) never refers to the communion bread.
"This IS My body" (Luke 22:19)
"The seed IS the word of God" (Luke 8:11)