erupt, abrupt, corrupt
"Rupture" is a term derived from the Latin root "rupt," meaning to break or burst. "Interrupt" comes from the same root, referring to the act of breaking into or disturbing a conversation or event. "Corruption" involves the process of something breaking down or becoming morally decayed, stemming from the root "rupt." "Abrupt" describes something happening suddenly or unexpectedly, linked to the root "rupt." "Bankruptcy" involves a financial state where one is "broken" or unable to pay debts, also originating from the root "rupt."
Three words that have the same root word as "trough" are "troughed," "troughs," and "troughing."
I believe it comes from the same root as 'rupture' or to break something or have a hole, so -rupt is 'broken or empty' - bank-rupt = my bank is broken and my assets have escaped = I have no money
Amplified
frequent, frequenting, frequently
Amplify, ample, and amplification all have the same root word as amplitude, which is "ample".
frequent, frequenting, frequently
Some words that have the same root words as poverty include: Impoverished Impoverishment Impoverish
Amplified
I have seen the word "doublet" used to mean two words that come from the same root word.
electricity, electric
umm, what words? here's a couple for you: induction, conduction, deduction, ..