links
left
Indicates a direction or position located on the left side. It is the opposite of 'rechts' (right).
Biegen Sie an der nächsten Kreuzung links ab.
Turn left at the next intersection.

left
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left
Indicates a direction or position located on the left side. It is the opposite of 'rechts' (right).
Biegen Sie an der nächsten Kreuzung links ab.
Turn left at the next intersection.

'Links' (left) is an adverb and does not change. It describes a position or direction. The corresponding adjective 'linke/r/s' (left) is used before a noun and must be declined.
Das Badezimmer ist die Tür links. (Adverb)
The bathroom is the door on the left. (Adverb)
The meaning of 'links' (left/left-wing) is usually clear from context. If it is about places, routes, or directions, the spatial meaning is intended. In discussions about politics, parties, or society, the political meaning is intended.
Mein Haus ist auf der linken Straßenseite.
My house is on the left side of the street.
In the spatial meaning, 'links' (left) is often used with prepositions or in fixed combinations. Typical ones are: 'nach links' (to the left), 'links von' (to the left of), and 'links abbiegen' (to turn left).
Der Supermarkt befindet sich links von der Post.
The supermarket is to the left of the post office.
The idiom 'jemanden links liegen lassen' (to ignore someone) is a fixed unit. The person being ignored is always in the accusative.
Nach dem Streit hat er mich wochenlang links liegen lassen.
After the argument, he ignored me for weeks.
right / quite
'recht' and 'links' are opposites in two areas. For direction and position, 'recht' means the right side, while 'links' means the left side. Here, 'recht' is often used as an adjective before a noun, for example 'die rechte Hand' (the right hand). 'links' is usually an adverb here, for example 'links abbiegen' (to turn left) or 'links stehen' (to stand on the left). Politically, the words can also describe opposite directions. They can be confused because the forms are similarly short and because there is also 'rechts'. For directions, you usually say 'rechts' and 'links'; before a noun, you do not say 'rechts', but 'recht' or, more precisely, 'rechte'.

Nach der Arbeit biege ich an der Ampel links ab.
After work, I turn left at the traffic light.
Im Gespräch zeigte die Mitarbeiterin auf die rechte Tür.
During the conversation, the employee pointed to the door on the right.