contacts
"Contacts" is a very practical word with a few common meanings. It can refer to people you know, a type of vision aid, or the act of reaching out to someone. Here are the most useful senses.
Think of your phone's contact list — all those names and numbers saved there. In life, your 'contacts' are the people you know, especially those who might be useful or helpful to you professionally or personally. One important contact can open many doors for you.
everyday language, business · Modern, widely used
In a more technical or formal sense, 'contact' (and its plural 'contacts') refers to the point where two things physically touch or connect. You will often see this in science or engineering — for example, electrical contacts are the metal parts inside a device that touch each other to let electricity flow.
science, engineering · Modern, widely used