System is an abstraction. It is a relationship between things, rather than a concrete object.
The abstract noun form of the adjective 'relevant' is relevance.
No, the word 'shocked' is the past participle, past tense of the verb to shock. The past participle of the verb also functions as an adjective.
The word 'shock' is both a noun and a verb.
The noun 'shock' is an abstract noun as a word for a sudden upsetting or surprising event or experience; a feeling or emotion resulting from an upsetting event.
The noun 'shock' is a concrete noun as a word for a violent shaking movement caused by an impact, explosion, or tremor; a violent shake or jerk as from an earthquake; a physical condition that is marked by a drop in blood pressure and volume; a charge of electricity passing through the body of a person or animal.
The noun 'war' is an abstract noun, a word for a sum of things that constitute a definition of war; a word for a concept.
Servant is a noun, a concrete noun, a word for a person or a machine.
A concrete noun can be used in an abstract context as in the following sentence, 'Make wealth your servant not your master.' the noun servant is abstract.
A related abstract noun is servitude.
The noun 'hunger' is a concrete noun, a word for a physical condition, a physical sensation.
The noun 'hunger' is an abstract noun as a word for a desire or a need; a word for an emotion.
There is no abstract noun form of the concrete noun leaf, a word for a physical object.
The word scream is a noun, a concrete noun; a word for a a long, loud, piercing cry or cries expressing extreme emotion or pain; a word for a sound.
The word scream is also a verb, to utter a a long, loud, piercing cry or cries expressing extreme emotion or pain.
The gerund, screaming, is a concrete noun for producing a loud cry (Screaming was all I could do.); the gerund, screaming is an abstract noun for very noticeable and difficult to ignore; an abstract noun for very fast or powerful.
The abstract noun forms of the adjective 'grand' are grandness and grandeur.
The word 'grand' is also a concrete noun as an informal word for a grand piano or a thousand dollars.
The proper noun Great Barrier Reef is a concrete noun, a word for a physical thing.
The noun 'sickness' is an abstract noun as a word for a condition; a word for the unhealthiness of someone or something.
The noun 'sickness' is a concrete noun as a word for a disease that can be physically seen, felt, or observed by testing.