The difference between thrombosis and embolism is that thrombosis is formed on the primary basis of the lesion site, whereas embolism is a condition in which a thrombus develops at a site far from the lesion, due to the dislodgement of a distant thrombus, resulting in thromboembolism at the lesion site. They are different in terms of the origin of the embolus, with the thrombus being formed on the basis of the lesion, whereas embolism is a thrombus in a distant lesion, with the thrombus dislodged leading to an embolism at the corresponding site. When these conditions occur, the patient’s symptoms may be the same. They all have an acute onset leading to ischemia and hypoxia at the distal end, causing symptoms of ischemia and hypoxia at the distal end.