How are contract law and property law similar? How are they different?

The authors argue in line with the prevailing opinion95 that the law of obligations, including contract law, must be distinguished from property law because property rights are generally valid against everybody while contractual claims are personal and therefore valid only against a specific person or persons. Property rights are more powerful than contractual rights. This is because property remedies prevent interference with rights over the thing e.g. specific performance, right to remain on land etc. Contract rights usually only incur damages.

of what agreement it does not show

is this an essay or multiple choice