spucken
to spit
To deliberately expel saliva or other liquids from the mouth.
Es ist unhöflich, auf den Boden zu spucken.
It is impolite to spit on the ground.

to spit
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to spit
To deliberately expel saliva or other liquids from the mouth.
Es ist unhöflich, auf den Boden zu spucken.
It is impolite to spit on the ground.

Spitting itself is considered very impolite or disrespectful in many situations. Therefore, the word 'spucken' often has a negative or coarse connotation, even though it is a neutral verb in itself.
Der Fußballspieler wurde bestraft, weil er auf das Spielfeld gespuckt hatte.
The soccer player was punished because he had spat on the field.
In its basic meaning, 'spucken' can stand without an object. The direction is then often indicated by a preposition such as 'auf' (on/onto) or 'in' (in/into).
Bitte nicht auf den Teppich spucken!
Please don't spit on the carpet!
When removing something from the mouth, 'spucken' needs an accusative object. This object is the thing you spit out.
Das Kind hat das bittere Medikament sofort wieder gespuckt.
The child immediately spat the bitter medicine back out.
When the subject of the sentence is a machine, a volcano, or another non-human thing, 'spucken' means something like 'to emit something in bursts'.
Der Vulkan begann, Asche und Lava zu spucken.
The volcano began to spew ash and lava.
The idiom 'Gift und Galle spucken' (to spit poison and bile) is a fixed unit. It means that someone is extremely angry and expresses this anger with nasty words.
Als er die Rechnung sah, spuckte er Gift und Galle.
When he saw the bill, he spat venom.
'In die Hände spucken' (to spit into one's hands) is a figurative idiom. It means that you begin a task with determination and energy.
Die Pause ist vorbei, lasst uns in die Hände spucken und weitermachen!
The break is over, let's roll up our sleeves and carry on!
to inject / spray
'spritzen' and 'spucken' can both mean that something comes out as a liquid or in small bursts. The most important difference is the source and the type of action. 'spucken' normally comes from the mouth: you spit saliva, a pit, or something unpleasant out. 'spritzen' is more general and means that a liquid comes out as a stream or is finely distributed, for example water from a hose or oil from a pan. Learners may confuse the words because in both cases something flies out. As a practical rule: from the mouth, you usually say 'spucken'; with water, paint, or other liquids, often 'spritzen'.

Er hat den Kirschkern in eine Serviette gespuckt.
He spat the cherry pit into a napkin.
Beim Abwaschen spritzt das Wasser über den Rand der Spüle.
While washing the dishes, the water splashes over the edge of the sink.