I'm confused

Is Neederlands the same Holland?
and why we have two Island (we can see them from the shore) name Curacao and Aruba and belong to the Nederlands antilles?
,where is the nederlands antilles?
its the same Holand?
, I Google This I coun't find any answer
and why we have two Island (we can see them from the shore) name Curacao and Aruba and belong to the Nederlands antilles?
,where is the nederlands antilles?
its the same Holand?
, I Google This I coun't find any answer