The difference is that a factory must have a plant, the physical buildings that house its machinery and manufacturing operations; but a plant, for example a power generating station, need not have a factory.
It might just be semantics.
The words can pretty much be interchanged (and often are), but the difference is probably that a factory may have several plants within its manufacturing complex. A car...
The words factory and plant often mean the same thing.
Although the word 'plant' as several meanings, in this answer we will just deal with its use when referring to 'industrial' matters. But first...
A plant is any of the approximately 260,000 known species of mosses, liverworts, ferns, herbaceous and woody plants, bushes, vines, trees, and various other forms of living organism that lack the...
The word 'plant', when used as a noun, can have two meanings. Firstly, it means any member of the Plant Kingdom, which can make its own food from inorganic substances, doesn't have sensory organs,...
A plant can be broadly described as any organism that produces its own food through the process of photosynthesis. Food is any substance that can be safely consumed for nutritional purposes. While...