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Prepositions with nouns

Of paper and on paper

On paper is a common idiomatic expression. Of paper usually describes material, as in made of paper.

Quick answer

Main difference

Use on paper for written form or theoretical situations. Use of paper mainly to describe material or content.

The agreement exists only on paper
a model made of paper
Her notes were on paper rather than online

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
on paper

In written or theoretical form

Use on paper for documents or ideas that exist formally but may differ in reality.

The plan looks good on paper
2
made of paper

Material or substance

Use of after made to describe material.

The bag is made of paper
3
piece of paper

Quantity or type

Of links paper to another noun in noun phrases.

She handed me a piece of paper
4
on paper forms

Physical writing surface

Use on paper when something is written physically.

Students completed the test on paper

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
on paper
On paper, the company is profitable.
theoretically or in written records
of paper
The flowers were made of paper.
material or composition
piece of paper
He signed a piece of paper.
a sheet or document
in paper
The article appeared in the paper.
paper means newspaper here

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using of paper for written form

Use on paper for documents or theoretical situations.

✕ The rules exist of paper. ✓ The rules exist on paper.

Missing made before of paper

Of paper usually follows a noun or made.

✕ The box of paper. ✓ The box is made of paper.

Confusing paper and newspaper

Paper can mean newspaper in some contexts.

✕ I read it on paper. ✓ I read it in the paper.

Using on paper for material

Use made of paper for composition.

✕ The toy is on paper. ✓ The toy is made of paper.

Quick practice

Choose the expression that matches the intended meaning.

1. The strategy looks effective ___ paper.
2. The decorations were made ___ paper.
3. She wrote the answer ___ paper.

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Frequently asked questions

What does on paper mean?

It means in written form or in theory rather than in practice.

Can I say of paper alone?

Usually no. It normally appears in larger phrases such as made of paper or piece of paper.

Is on paper always literal?

No. It can also mean theoretically, as in a plan that seems good on paper.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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