Condensation polymers

A polyester is a condensation polymer in which the monomer units are joined by ester (–COO–) linkages.
Terylene (dacron) is made by condensation of ethylene glycol ($HOCH_2CH_2OH$) with terephthalic acid ($HOOC-C_6H_4-COOH$) at 420–460 K, so it contains ester linkages and is a polyester.
Nylon-6,6 is a polyamide (from hexamethylenediamine and adipic acid).
Bakelite is a phenol–formaldehyde resin and melamine polymer is a melamine–formaldehyde resin.
Hence the polyester is terylene.

In condensation polymerisation, bifunctional monomers join with the elimination of small molecules such as water.
Nylon-66 is a copolymer of adipic acid (6 carbon atoms) and hexamethylenediamine (6 carbon atoms), formed with the loss of water molecules.
$n\,HOOC(CH_2)_4COOH + n\,H_2N(CH_2)_6NH_2 \rightarrow [-CO-(CH_2)_4-CO-NH-(CH_2)_6-NH-]_n + 2n\,H_2O$
It is a polyamide with high tenacity and elasticity. It is resistant to abrasion and is used for the reinforcement of rubber tyres and in the manufacture of parachutes, safety belts, carpets and fabrics.
Teflon is an addition polymer of tetrafluoroethene, and natural rubber is an addition polymer of isoprene.
Styrene is a monomer; its polymer, polystyrene, is also an addition polymer.
So the polymer prepared by condensation polymerisation is Nylon-66.