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.
Ambele previn formarea  cheagurilor de sânge - anticoagulantele previn formarea factorilor coagulării care agregă cheagurile, iar aspirina împiedică celulele sanguine să se aglutineze în grupuri care devin cheaguri.