Common nouns which beconverted to abstract nouns?

It's not quite accurate to say that common nouns are "converted" into abstract nouns. Rather, abstract nouns often *derive* from common nouns, and their meanings are closely related.

Here's how it works:

* Common nouns refer to concrete, tangible things that can be perceived by the senses. Examples: *dog, chair, book, mountain*.

* Abstract nouns refer to intangible concepts, ideas, qualities, or states of being. Examples: *love, freedom, happiness, justice*.

Many abstract nouns are formed by adding suffixes to common nouns, changing their meaning from concrete to abstract. Here are some examples:

Suffix: Common Noun Abstract Noun

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-ness Kind Kindness

-ity Happy Happiness

-ship Friend Friendship

-ment Move Movement

-ance/-ence Resist Resistance

-tion Create Creation

In these cases, the abstract noun represents a quality, state, or concept associated with the common noun.

Here are some other examples of abstract nouns that derive from common nouns:

* Courage (from the common noun *courage* meaning "bravery")

* Knowledge (from the common noun *know* meaning "to understand")

* Wisdom (from the common noun *wise* meaning "having knowledge and experience")

* Truth (from the common noun *true* meaning "conforming to reality")

Remember, while many abstract nouns originate from common nouns, not all of them do. Some abstract nouns are purely abstract, without a direct connection to a concrete object.

Let me know if you'd like to explore any of these examples in more detail or if you have other questions about abstract nouns!