We have both electric-propulsion and ion-thruster tags, are they distinct? What would be good usage guidance for electric-propulsion?

The tag is used on 125 questions and it's usage guidance is:

Questions about engines used in space that accelerate ions to create thrust.

and it has been synonymized with , and .

The tag is on 59 questions, and it's usage guidance is:

The electric-propulsion tag has no usage guidance, can you help us create it?

Question: Is a catch-all tag for several kinds of propulsion that may not overlap with ? Perhaps things that use charged particles in the solar wind or existing magnetic fields along with electrical power in a spacecraft? Or should these two also be synonymized?

• Resistojets are electric propulsion devices that are not ion-thrusters. en.wikipedia.org/wiki/Resistojet_rocket – Organic Marble Apr 22 at 21:34
• @OrganicMarble To "Is electric-propulsion a catch-all tag for several kinds of propulsion that may not overlap with ion-thruster?" are you suggesting "yes" without saying it? 1, 2 (and 3 from here) are also "electro-thermal" as well. Should questions like those first two have the electro-propulsion tag as well? – uhoh Apr 22 at 23:19
• I'm agreeing (I think) that "electric propulsion" =/= "ion-thruster" – Organic Marble Apr 22 at 23:19
• @OrganicMarble I'm currently un-coffee'd so you have me at an advantage. I see, to "...are they distinct" the answer is yes. – uhoh Apr 22 at 23:21
• There are enough questions between the two tags to justify having more than one tag. However, I do not feel qualified to specify exactly what those tags should be called. – DrSheldon Apr 25 at 9:18