pillbox

As nouns the difference between blockhouse and pillbox

is that blockhouse is a sturdy military fortification, often of concrete, with gunports while pillbox is a small box in which pills are kept.

As nouns the difference between fort and pillbox

is that fort is a fortified defensive structure stationed with troops while pillbox is a small box in which pills are kept.

As a proper noun Fort

is {{surname}.

As nouns the difference between pillbox and bunker

is that pillbox is a small box in which pills are kept while bunker is a hardened shelter, often buried partly or fully underground, designed to protect the inhabitants from falling bombs or other attacks.

As a verb bunker is

to load a vessel with oil or coal for the engine.

As a noun pillbox is

a small box in which pills are kept.