A pathogen is a microorganism that can cause disease in its host. This includes bacteria, viruses, fungi, and parasites that can infect humans, animals, and plants.
A word that has the same meaning as another word is a synonym.
Some words that contain the root word "onym" are synonym (meaning a word with a similar meaning), antonym (meaning a word with the opposite meaning), and homonym (meaning a word that sounds the same but has a different meaning).
The root word meaning "nerve" is "neur-" from the Greek word "neuron" meaning sinew or nerve.
The word "pestilence" has a root meaning plague, which comes from the Latin word "pestis" meaning plague.
The connotative meaning of a word refers to the emotions, associations, or implications that the word carries beyond its literal definition, while the denotative meaning is the literal definition or primary meaning of the word.
Pathogen
asepsesAsepsis is the term used for pathogen-free states.
A pathogen.
Pathogen
pathogen
A carcinogen is an agent that causes cancer.
The disease causing microorganism is called a pathogen.
Specificity
pathogenAn agent of infection is a pathogen.
A treatable pathogen that causes infection
A pathogen is ANY agent that leads to pathology (full stop - end of description). Pathology is damage or disease affecting a living organism. This is most often restricted to the bodies of animals and plants, but, logically, it need not be exclusive to these two kingdoms. There has been an increasing tendency to shorten "pathogenic organism" to "pathogen" and this has progressively distorted the generally accepted meaning and various dictionary definitions of "pathogen". This is evident in the various extant definitions of "pathogen".
Pathogen is the agent or the culprit that causes a disease while the disease is the end result of what a pathogen did. Example: HIV virus is the pathogen while AIDS is the disease state that can result from high HIV viral load.