What are the common signs between Homo sapiens and primates?

Humans and primates have many similarities, which make it clear to us that in the animal kingdom these are our closest relatives. Such similarities include the opposition of the thumb to the rest on the upper limb; the presence of nails, not claws; the eyes are in front, not on the sides of the head; the birth of one or less often two cubs. Since cubs are born less, both humans and primates carefully look after them, caress them, protect them from dangers, and raise them. There are only two mammary glands. Also, the similarities can be attributed to the fact that both primates and humans are social beings – they communicate with each other, adopt experience. I believe that humans are correctly classified as belonging to the order of primates, since there are many similarities between humans and primates, which no longer exist with any representatives of the animal world.