Overlay or Overlay Sheet? Hi, is there a difference between an "overlay" and an "overlay sheet"? Both are used for a cover. I need it to describe a paper cover for a specific chapter. Which fits better?

Difference between 'to refrigerate', 'to frigerate' and 'to cool'? Hi everyone, is there a difference between the verbs 'refrigerate', 'frigerate' and 'cool'? They all seem to have the meaning "to cool down", but is it correct? Or do some of them have other meanings? Does probably one of them mean "to freeze sth." (like not simply to cool down, but to make ice of it)?

Fault triggered or initiated? Hi everyone, which verb fits "fault"? What I've found is "a fault was triggered/initiated", but what is the difference between them? Thank you!

Can I say "a built-up oxygen concentration"? Hello, is it possible to say "a built-up oxygen concentration" when it was raised over some time? I'm looking for a word to describe the concentration. Thank you for your answers and other suggestions! :)

The meaning of the word "supervise" with a PLC Is it possible to say that a PLC supervises a process without adding the words "controls and monitors the process"? In the Oxford Dictionary (https://en.oxforddictionaries.com/definition/supervise) it's said: "supervise: Observe and direct the execution of (a task or activity)" To me it means that the word "supervise" can replace the words "controls and monitors" if I talk about the programmable logic controller (PLC). Am I correct?

Is it a troubleshooting plan or not? Hi everyone, I have a table of errors with possible causes and solutions to solve the problem. e.g.: error - possible cause - solution red lamp lightens up - too much weight - lighten the container Can I call this a "troubleshooting plan"? Or how do you call it? Greetings

Difference how to use "dosing" and "dosage" Hello everyone, is there a difference between dosing/dosage in a compound word? I translate technical texts from German into English and have found compound words like "dosing pump", "dosing valve", "dosing rate" and words like "dosage system" and "dosage setting". Now my question: Is there a difference in the meaning of dosing and dosage in a compound word? I've found explanations for medicine ("dose - amount of medicine taken at once" and "dosage - amount taken regularly"), but it doesn't answer my question... Best regards