ashes, dust, earth, ground, morter, powder, rubbish

“Ashes” From Boyd’s Bible Dictionary:

To sprinkle with or sit in ashes, marked humiliation, grief, and penitence (Gen. 18:27; 2 Sam. 13:19; Esth. 4:3; Job 2:8; Jer. 6:26; Lam. 3:16; Matt. 11:21). The altar ashes, when a red heifer was sacrificed, were watered and used for purifying the unclean (Num. 19:17-22).

“Dust” From Boyd’s Bible Dictionary:

(storm breath). Symbol of mourning (Josh. 7:6; Isa. 47:1); feebleness (Gen. 18:27; Job 30:19); countless numbers (Gen. 13:16); low condition (1 Sam. 2:8); rage (2 Sam. 16:13; Acts 22:23); renunciation (Matt. 10:14; Mark 6:11; Acts 13:51). A sand storm (Deut. 28:24).

“Earth” From Boyd’s Bible Dictionary:

(producer). The world (Gen. 1:1); dry land (Gen. 1:10); the soil (Gen. 2:7).

“Ashes” From Concise Bible Dictionary:

Ashes, mostly from burnt wood, were used as a sign of sorrow or mourning, either put on the head (2 Sam. 13:19), or on the body with sackcloth (Esther 4:1; Jer. 6:26; Lam. 3:16; Matt. 11:21; Luke 10:13); or strewn on a couch on which to lie (Esther 4:3; Isa. 58:5; Jonah 3:6). To eat ashes expresses great sorrow (Psa. 102:9); and to be reduced to them is a figure of complete destruction (Ezek. 28:18; Mal. 4:3); to feed on them tells of the vanities with which the soul may be occupied (Isa. 44:20). “Dust and ashes” was the figure Abraham used of himself before Jehovah (Gen. 18:27); and Job said he had become like them by the hand of God (Job 30:19). For the ashes of the Red Heifer see HEIFER.

“Dust” From Concise Bible Dictionary:

Small particles of matter found on the ground, out of which man was formed, to whom it was said, “Dust thou art, and unto dust shalt thou return” (Gen. 2:7; Gen. 3:19). “The first man is of the earth, earthy” (1 Cor. 15:47). It is used as a symbol of weakness: “he remembereth that we are dust” (Psa. 103:14). To “lick the dust” is figurative of defeat (Psa. 72:9). To “cast dust upon the head” was a sign of grief (Ezek. 27:30; Rev. 18:19). To “shake the dust off the feet” on leaving a city where the servants of Christ had been rejected, was leaving them to judgment: not even the dust of their city should be presented before the messengers’ Master (Matt. 10:14; Acts 13:51). Similarly dust was cast or shaken into the air by men in great indignation (Acts 22:23).

“Eared, Earing” From Concise Bible Dictionary:

“Plowed” and “plowing,” as the same Hebrew word is elsewhere translated (Gen. 45:6; Ex. 34:21; 1 Sam. 8:12).
Plowing Scene in Palestine (1910-1920)

Strong’s Dictionary of Hebrew Words:

from 6080; dust (as powdered or gray); hence, clay, earth, mud
KJV Usage:
ashes, dust, earth, ground, morter, powder, rubbish