Good question bro. Let's put it this way. The central ideas of evolution are that life has a history it has changed over time and that different species share common ancestors. In the "evolutionary tree", the root of the tree represents the ancestral lineage, and the tips of the branches represent the descendents of that ancestor. So, as the branches grow all the species (including humans) lineage splits or speciation, it is represented by phylogeny. When a speciation event occurs, a single ancestral lineage gives rise to two or more specimen of lineages. Phylogenies trace patterns of shared ancestry between lineages. Each lineage has a part of its history that is unique to it alone and parts that are shared with other lineages. Similarly, each lineage has ancestors that are unique to that lineage and ancestors that are shared with other lineages or common ancestors - we are in the sense not above or below them.
I hope this helps bro. But don't take my word for it, we have differentiations of the terms involved. You can look for more information... libraries or internet.
