subbase

In mathematics|lang=en terms the difference between topological and subbase

is that topological is (mathematics) of or relating to topology while subbase is (mathematics) a certain subcollection of a topological space.

As an adjective topological

is (mathematics) of or relating to topology.

As a noun subbase is

(architecture) the lowest projecting part of a baseboard, a pedestal or a similar construct.

In mathematics terms the difference between subcollection and subbase

is that subcollection is a subset of a collection while subbase is a certain subcollection of a topological space.

As nouns the difference between construct and subbase

is that construct is something constructed from parts while subbase is (architecture) the lowest projecting part of a baseboard, a pedestal or a similar construct.

As a verb construct

is to build or form (something) by assembling parts.

In architecture|lang=en terms the difference between pedestal and subbase

is that pedestal is (architecture) the base or foot of a column, statue, vase, lamp while subbase is (architecture) the lowest projecting part of a baseboard, a pedestal or a similar construct.

As nouns the difference between pedestal and subbase

is that pedestal is (architecture) the base or foot of a column, statue, vase, lamp while subbase is (architecture) the lowest projecting part of a baseboard, a pedestal or a similar construct.

As a verb pedestal

is to set or support on (or as if on) a pedestal.

As nouns the difference between baseboard and subbase

is that baseboard is a panel or molding between the floor and the interior wall of a structure while subbase is the lowest projecting part of a baseboard, a pedestal or a similar construct.