The difference between Apt and Liable

When used as adjectives, apt means suitable, whereas liable means bound or obliged in law or equity.

Apt is also noun with the meaning: an apartment.

check bellow for the other definitions of Apt and Liable

Apt as an adjective:

Suitable; appropriate; fit or fitted; suited.

Examples:

"Tonight there’s a full moon, which is apt, since the election night will bring out the lunatics."
Apt as an adjective (of persons or things):

Having a habitual tendency; habitually liable or likely; disposed towards.
Apt as an adjective:

Ready; especially fitted or qualified (to do something); quick to learn; prompt; expert

Examples:

"a pupil apt to learn"

"an apt scholar"

Liable as an adjective:

bound or obliged in law or equity; responsible; answerable.

Examples:

"The surety is liable for the debt of his principal."
Liable as an adjective:

subject; susceptible.

Examples:

"This crime is liable to imprisonment for life."

"A man liable to heart disease."
Liable as an adjective:

exposed to a certain contingency or causality, more or less probable.
Liable as an adjective (as predicate, with "to" and an infinitive):

likely.

Examples:

"Someone is liable to slip on your icy sidewalk."