Does the Thrown Weapon Fighting Style apply to ranged, improvised attacks?

The Thrown Weapon Fighting Style states:

[…] In addition, when you hit with a ranged attack using a thrown weapon, you gain a +2 bonus to the damage roll.

My question is whether "a thrown weapon" means "a weapon with the thrown property" or "a weapon you have thrown". An example of something being in the latter category and not the former would be improvised weapons:

[…] If a character uses a ranged weapon to make a melee attack, or throws a melee weapon that does not have the thrown property, it also deals 1d4 damage. An improvised thrown weapon has a normal range of 20 feet and a long range of 60 feet.

Do ranged, improvised attacks counts as "ranged attacks with a thrown weapon"?