The bible wasn't written in English, so here's the "Concordance" in case you don't have one (or e-sword).
H6083
עפר
‛âphâr
Total KJV Occurrences: 110
dust, 93
Gen_2:7, Gen_3:14, Gen_3:19 (2), Gen_13:16 (2), Gen_18:27, Gen_28:14, Exo_8:16-17 (3), Lev_14:41, Lev_17:13, Num_5:17, Num_23:10, Deu_9:21 (2), Deu_32:24 (2), Jos_7:6, 1Sa_2:8, 2Sa_16:13, 2Sa_22:43, 1Ki_16:2, 1Ki_18:38, 1Ki_20:10, 2Ki_13:7, 2Ki_23:12, 2Ch_1:9, Job_2:12, Job_4:19, Job_5:6, Job_7:5, Job_7:21, Job_10:9, Job_14:19, Job_17:15-16 (2), Job_20:11, Job_21:26, Job_22:24, Job_27:16, Job_28:6, Job_30:19, Job_34:15, Job_38:38, Job_39:14, Job_40:13, Job_42:6, Psa_7:5, Psa_18:42, Psa_22:15, Psa_22:29, Psa_30:9, Psa_44:25, Psa_72:9, Psa_78:27, Psa_103:14 (2), Psa_104:29, Psa_113:7, Pro_8:25-26 (2), Ecc_3:20 (2), Ecc_12:7, Isa_2:10, Isa_25:12, Isa_26:5, Isa_26:19, Isa_29:4 (2), Isa_34:7, Isa_34:9, Isa_40:12, Isa_41:2, Isa_47:1, Isa_49:23, Isa_52:2, Isa_65:25, Lam_2:10, Lam_3:29, Eze_24:7, Eze_26:4, Eze_26:12, Eze_27:30, Dan_12:2, Amo_2:7, Mic_1:10, Mic_7:17, Hab_1:10, Zep_1:17, Zec_9:3
earth, 7
Gen_26:15, Job_8:19, Job_19:25, Job_28:2, Job_30:6, Job_41:33, Isa_2:19
powder, 3
2Ki_23:6 (2), 2Ki_23:15
ashes, 2
Num_19:17, 2Ki_23:4
mortar, 2
Lev_14:42, Lev_14:45
rubbish, 2
Neh_4:2, Neh_4:10
ground, 1
Job_14:8
And the 'definition' from Strong's Dictionary:
H6083
עפר
‛âphâr
aw-fawr'
From H6080;
dust (as powdered or gray); hence clay, earth, mud: - ashes, dust, earth, ground, morter, powder, rubbish.
Don't know if that's helpful, but it was easy.