The term 'put on cargo' refers to the process of loading goods onto a vehicle or vessel for transport. The crossword solutions for this term are 'laded' (5 letters), 'LADE' (4 letters), 'LOAD' (4 letters), and 'loadup' (6 letters). All of these words refer to the same action of placing items onto a vehicle or vessel, but with slight variations in spelling and length. 'Laded' is the past tense of the verb 'to LADE, ' which means to LOAD or fill UP. 'LADE' is the present tense of the verb. 'LOAD' is another verb that means to place items onto a vehicle or vessel. Finally, 'loadup' is a compound word that combines the verb 'LOAD' with the adverb 'UP, ' which emphasizes the action of loading.