@lucy6,
They are
not the same but they do have a relationship.
Respectable would be sort of passive action. A person
can be viewed as a respectable person by others ..as they form an opinion of their manners and decorum. This could be an indication regarding their reputation or position in the community ...etc.
However,
respectful is a bit more direct... more about a person's actions or behavior
toward another or others. They act or behave towards others in a manner that honors others..and does not take advantage ...such as deferring and more listening. A bit more about the interaction of how they act with others directly..as opposed to the position in the community .