The act of warming, or the state of being warmed; a heating.
"The warm from the radiator had finally thawed out the frost on the windowsill."
In plain English: A warm is a friendly, informal greeting where people shake hands and say hello to each other.
"She welcomed the warm feeling of the sun on her face after a long winter."
Usage: Use "warm" as a noun only in specific technical contexts referring to the process of heating, such as in engineering or physics. In everyday conversation, it is almost always an adjective describing temperature rather than a standalone noun.
To make or keep warm.
"She pulled up her coat to keep warm against the chilly wind."
In plain English: To warm something means to make it hotter by adding heat.
"The sun warmed my face as I walked to work."
Usage: Use "warm" as a verb when you physically increase the temperature of something, such as warming your hands by a fire. It specifically describes the action of making an object or body heat up rather than staying at a comfortable level.
having or producing a comfortable and agreeable degree of heat or imparting or maintaining heat
"a warm body"
"a warm room"
"a warm climate"
"a warm coat"
psychologically warm; friendly and responsive
"a warm greeting"
"a warm personality"
"warm support"
inducing the impression of warmth; used especially of reds and oranges and yellows when referring to color
"warm reds and yellows and orange"
Having a temperature slightly higher than usual, but still pleasant; mildly hot.
"The sun made the patio tiles warm to my feet as I sat down for lunch."
In plain English: Warm means having a temperature that is hot enough to feel comfortable but not so hot that it burns you.
"The sun made the cold beach feel warm and inviting."
Usage: Use "warm" to describe temperatures that are pleasantly above freezing but not yet hot enough to cause discomfort. It applies equally to objects like food or beverages and abstract concepts such as feelings or colors.
The word "warm" comes from Old English and originally meant to be heated by fire. It traveled into modern English with this same sense of gentle heat rather than intense burning.