Point2F is an alias for Point{2,Float64}.
Vector2F is an alias for SArray{Tuple{2},Float64,1,2}.
These are two concrete types. Both are subtypes of the abstract type StaticArray{Tuple{2},Float64,1}.
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Point2F is an alias for Point{2,Float64}.
Vector2F is an alias for SArray{Tuple{2},Float64,1,2}.
These are two concrete types. Both are subtypes of the abstract type StaticArray{Tuple{2},Float64,1}.
Does this answer your question?