All oscillators and movings averages should be called "indicators". Each indicator - might - produce "signals" which should be used to trigger trades.
For instance:
Moving average is an indicator: the price relative to the MA is an indicator of the market conditions, while an MA crossover is a signal.
Stochastic RSI is an indicator (oscillator): the K and D line relative to eachother is an indicator of market conditions, while oversold/overbought and crossover are signals.
"Strategies" are specific trading strategies that use "signals" and/or "indicators" to execute trades.
For instance:
A strategy might include both indicators (such as MA or RSI) to gauge the market conditions and signals (such as Stoch crossover) as triggers to execute trades.
All oscillators and movings averages should be called "indicators". Each indicator - might - produce "signals" which should be used to trigger trades.
For instance:
"Strategies" are specific trading strategies that use "signals" and/or "indicators" to execute trades.
For instance: