Root ث ق ل(v q l) has 15 unique word forms and appears 28 times in the Quran.

English gloss Weight, heavy, Humans and Jinn's

Word Translation Occurrences
مِثۡقَالَ (as much as) weight, (equal to the) weight, weight, (as much as) weight, (equal to the) weight, (the) weight, (the) weight, weight 12
ثَقُلَتۡ (are) heavy, It lays heavily, (are) heavy, (will be) heavy, It lays heavily, (will be) heavy 8
مُّثۡقَلُونَ (are) burdened, (are) overburdened, (are) burdened, (are) overburdened 4
أَثۡقَالِهِمۡۖ their burdens, their burdens 2
أَثۡقَلَت she grows heavy, she grows heavy 2
ٱثَّاقَلۡتُمۡ you cling heavily, you cling heavily 2
ثِقَالٗا heavy, heavy 2
ثَقِيلًا heavy, heavy 2
ثَقِيلٗا grave, grave 2
ٱلثِّقَالَ the heavy, the heavy 2
ٱلثَّقَلَانِ two classes, two classes 2
مِثۡقَالُ (the) weight, (the) weight 2
مِّثۡقَالِ (the) weight, (the) weight 2
مُثۡقَلَةٌ a heavily laden, a heavily laden 2
وَأَثۡقَالٗا and burdens, and burdens 2
أَثۡقَالَكُمۡ your loads, your loads 2
وَثِقَالٗا or heavy, or heavy 2
أَثۡقَالَهَا its burdens, its burdens 2
أَثۡقَالَهُمۡ their burdens, their burdens 2