key

As nouns the difference between key and door

is that key is an object designed to open and close a lock while door is a {{l/en|portal}} of entry into a building, room or vehicle, consisting of a rigid plane movable on a {{l/en|hinge}}. Doors are frequently made of {{l/en|wood}} or {{l/en|metal}}. May have a {{l/en|handle}} to help open and close, a {{l/en|latch}} to hold the door closed, and a {{l/en|lock}} that ensures the door cannot be opened without the key.

As verbs the difference between key and door

is that key is to fit (a lock) with a key while door is to cause a {{l/en|collision}} by opening the door of a vehicle in front of an {{l/en|oncoming}} {{l/en|cyclist}} or {{l/en|pedestrian}}.

As an adjective key

is indispensable, supremely important.

As a proper noun Key

is {{surname}.

As nouns the difference between locksmith and key

is that locksmith is one who studies or practices locksmithing while key is an object designed to open and close a lock.

As an adjective key is

indispensable, supremely important.

As a verb key is

to fit (a lock) with a key.

As a proper noun Key is

{{surname}.

In historical terms the difference between key and point

is that key is a manual electrical switching device primarily used for the transmission of Morse code while point is a string or lace used to tie together certain garments.

In lang=en terms the difference between key and point

is that key is to operate (the transmitter switch of a two-way radio) while point is to give particular prominence to; to designate in a special manner; to point out.

As nouns the difference between key and point

is that key is an object designed to open and close a lock while point is a discrete division of something.

As verbs the difference between key and point

is that key is to fit (a lock) with a key while point is to extend the index finger in the direction of something in order to show where it is or to draw attention to it.

As an adjective key

is indispensable, supremely important.

As a proper noun Key

is {{surname}.