Question

what are 2 differences a phylogenetic tree and a cladogram

Answer 1

The length of branches in phylogenetic trees represents the time in which a number of character changes from ancestor ( knot ) to new species ( next knot ) took place.
In a cladogram branch length has no relevance to time.

Also, The phylogenetic tree reflects the evolutionary relationship among groups in a branching pattern. The cladogram actually specifies the derived characteristics.