How To Convert Common Noun Into Abstract Noun

I'm not sure what you mean. An abstract noun describes a quality or attribute, like "honesty" or "courtesy". Both are common nouns as opposed to proper nouns. A concrete noun describes a physical object, like a flower or it's vase. All are common nouns.

To convert a common noun into an abstract noun, you typically add a suffix or modify the word in a particular way. Here are a few strategies you can use:

1. By adding a suffix:
- "-ness": This suffix is commonly added to common nouns to form abstract nouns. For example, "kind" becomes "kindness," "dark" becomes "darkness," and "good" becomes "goodness."
- "-ity": This suffix is used to convert common nouns into abstract nouns indicating a quality, state, or condition. For example, "honest" becomes "honesty," "capable" becomes "capability," and "happy" becomes "happiness."
- "-ism": This suffix is typically added to denote a belief, practice, or ideology derived from a common noun. For example, "commune" becomes "communism," "capital" becomes "capitalism," and "social" becomes "socialism."

2. By modifying the word:
- Changing the word ending: Sometimes, changing the ending of a common noun can transform it into an abstract noun. For example, "love" becomes "loveliness," "scene" becomes "scenery," and "child" becomes "childhood."
- Changing the word form: In certain cases, changing the word form can convert a common noun into an abstract noun. For example, "serve" becomes "service," "function" becomes "functionality," and "govern" becomes "government."

Remember that there are no strict rules for converting common nouns into abstract nouns, as it depends on the specific word and its context. Using a dictionary or a thesaurus can be helpful in finding suitable suffixes or modifications for a given common noun.