1. The quality or state of being able to exist or work together without conflict or problems.
Usage: Plural form of compatibility; Often used in technical, scientific, or interpersonal contexts
2. Instances or cases of things that are compatible with each other.
Usage: Plural usage emphasizing multiple compatible relationships or systems

Examples

• The software compatibilities between the two systems made integration seamless.
• We checked the compatibilities of all the devices before purchasing them.
• Their personality compatibilities suggested they would be good roommates.
• The doctor reviewed the drug compatibilities to ensure safe treatment.
• Modern operating systems often have better compatibilities with older software.
• The team discussed the compatibilities of their different work styles.
• Chemical compatibilities must be verified before mixing substances in the lab.