For the 32nd year, the entire world voted at the UN General Assembly to demand an end to the illegal US embargo against Cuba. The USA and Israel opposed the international community in a vote of 187 to 2.
It's very much a blockade in practice since it prevents the vast majority of companies of any country from trading with Cuba.
There are very few companies that would survive competition by sacrificing trade with the nearby US to trade with Cuba instead the way the "embargo" forces them to.
An embargo would imply its just America that can't trade with Cuba. In reality, almost nobody can trade with Cuba, because any ship that does cannot enter American ports to trade with America.
It may not be a blockade by the dictionary definition, but it's certainly not just an embargo.