Here are some possible synonyms, depending on the context:
For physical properties:
* Attributes: These are characteristics that describe something.
* Features: These are distinctive qualities or characteristics.
* Traits: These are inherent qualities or characteristics.
* Characteristics: These are specific features that distinguish something.
For legal properties:
* Assets: These are possessions with monetary value.
* Real estate: This refers to land and buildings.
* Holdings: These are things that someone owns.
For general properties:
* Qualities: These are characteristics that make something what it is.
* Attributes: These are specific features that describe something.
* Characteristics: These are distinctive qualities or features.
To give you a more accurate synonym, please provide me with the sentence or context in which "properties" is used.