INFP. ENFP. INFJ. They may seem almost identical on first glance, but they are all very different types, with unique assets, strenghts, and weaknesses.
INFP: Fi - Ne - Si - Te
ENFP: Ne - Fi - Te - Si
INFJ: Ni - Fe - Ti - Se
Another thing: How INFPs differ from ENFPs, in my opinion, is that...