1. the imparting or exchanging of information or news
Usage: usually plural when referring to multiple instances or channels
2. systems or means of sending or receiving information, such as telephone lines, radio, or the internet
Usage: often used in plural form; can refer to infrastructure or technology
3. the field of study or profession dealing with the transmission of information through various media
Usage: academic or professional context

Examples

• Good communications between team members are essential for project success.
• The company invested in new communications technology to improve efficiency.
• She studied communications in college and now works in public relations.
• Clear communications helped resolve the misunderstanding quickly.
• Modern communications allow people to stay connected across the globe.
• The military relies on secure communications systems.
• Effective communications skills are valuable in any career.