Both prevent blood clots from forming— blood thinners by preventing the formation of the clotting factors that hold clots together, and aspirin by preventing blood cells  from clumping into groups that become clots.
Ambos impedem a formação de coágulos de sangue. Os anticoagulantes impedem a formação dos fatores de coagulação que agrupam os coágulos. A aspirina impede as células sanguíneas de se agruparem e formarem coágulos.