Incorrect spelling, explanation: you can’t spell controls as controlls because of a rule in English spelling that governs how consonants are doubled when adding suffixes. The general rule is that consonants are only doubled in certain situations, specifically when a word ends in a single vowel followed by a single consonant, and the vowel is stressed. The correct spelling is controls, not controlls.

Correct spelling, explanation: the spelling of control follows standard English rules, and when forming the third-person singular verb or the plural noun, -s is simply added to make controls. There has never been a historical or linguistic reason to use controlls. The word controls comes from the verb control, which has its origins in Old French and Latin. It ultimately derives from the Old French contreroller, which meant to check against a duplicate register.

Definition of controls:
1. Verb (3rd person present), determine the behavior or supervise the running of
The central government controls the economy by regulating trade and taxation policies.
The engineer controls the power plant’s operations to ensure everything runs smoothly and efficiently.
2. Noun (plural), a device or mechanism for operating or regulating a car, aircraft, etc.
The pilot gripped the controls firmly as the plane prepared for landing.
The car’s dashboard is equipped with modern controls for adjusting the air conditioning and audio system.

Collocations with controls:
Some of the most commonly used collocations include:
1. Safety controls: mechanisms or procedures implemented to ensure safety in operations or processes.
The factory installed additional safety controls to prevent accidents on the production line.
2. Electronic controls: systems that use electronic components to regulate or manage machines or devices.
The modern washing machine comes with electronic controls for different wash cycles.
3. Flight controls: the mechanisms used by pilots to control the movement of an aircraft.
The pilot checked all the flight controls before takeoff to ensure everything was functioning properly.
4. Climate controls: devices or systems used to regulate temperature, humidity, or air quality in an environment.
The office building has advanced climate controls to keep the temperature comfortable throughout the year.