buildup

Fillin is likely misspelled.

Fillin has no English definition.

As a noun buildup is

an accumulation; an increase; a gradual development.

As nouns the difference between propaganda and buildup

is that propaganda is a concerted set of messages aimed at influencing the opinions or behavior of large numbers of people while buildup is an accumulation; an increase; a gradual development.

As nouns the difference between buildup and setup

is that buildup is an accumulation; an increase; a gradual development while setup is equipment designed for a particular purpose; an apparatus.

As a verb setup is

misspelling of lang=en.

As a verb explode

is to destroy with an explosion.

As a noun buildup is

an accumulation; an increase; a gradual development.