sprühen
to spray
To atomize and distribute a liquid in the form of fine droplets.
Sie sprühte sich Parfüm auf das Handgelenk.
She sprayed perfume on her wrist.

to spray
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to spray
To atomize and distribute a liquid in the form of fine droplets.
Sie sprühte sich Parfüm auf das Handgelenk.
She sprayed perfume on her wrist.

The meaning of 'sprühen' (to spray) becomes clear through the object or complement. If you spray a liquid (water, paint), the literal meaning is intended. If 'Funken' (sparks) are sprayed, it is about fire or electricity. If the verb appears with 'vor' and a feeling, it is a figurative description.
Der Gärtner sprüht Wasser auf die Pflanzen.
The gardener sprays water on the plants.
When you spray a liquid onto a surface, use the preposition 'auf' followed by the accusative. The pattern is: etwas auf etwas sprühen (to spray something onto something).
Er sprühte den Lack gleichmäßig auf das Holz.
He sprayed the varnish evenly onto the wood.
In the meaning 'to emit sparks', the most common combination is 'Funken sprühen' (to spray sparks). This can refer to a fire, a grinding machine, or even a short circuit.
Als das Metall auf den Stein traf, sprühten Funken.
When the metal hit the stone, sparks sprayed.
The figurative meaning is almost always formed with the preposition 'vor' and a noun in the dative that expresses a feeling or quality. The pattern is: vor + [feeling in the dative] + sprühen.
Die Kinder sprühten vor Freude, als sie die Geschenke sahen.
The children radiated joy when they saw the presents.
to inject / spray
'spritzen' and 'sprühen' can both describe a liquid being distributed. 'spritzen' can mean a stronger stream, or more generally that liquid suddenly comes out of something or gets onto something. 'sprühen' more specifically means many fine droplets, for example from a spray bottle or can. Learners may confuse the words because both can fit with water, perfume, cleaning products, or paint. When the liquid is finely distributed, 'sprühen' is usually more precise. When it is about a stream, splashes, or a coarser movement, 'spritzen' fits better.

Vor dem Bügeln sprüht Lena etwas Wasser auf das Hemd.
Before ironing, Lena sprays a little water onto the shirt.
Beim Abwaschen spritzt Wasser auf den Boden.
While washing the dishes, water splashes onto the floor.