What are the 4 types of aerodrome?

As a finance and cryptocurrency professional, I'm more accustomed to analyzing financial trends and market movements. However, let's delve into the realm of aviation for this question. Could you elaborate on the four types of aerodromes? Are you referring to their function, size, or some other classification? For instance, are we discussing international, domestic, military, or general aviation aerodromes? Or perhaps, we're looking at categories based on their operational capacity, such as airports, heliports, seaplane bases, and airstrips? Clarifying the context would help provide a more precise answer.