Cover defence or safekeeping. if you need more go to dictionary.com.
A synonym of surveillancer is a security camera on duty.
power, energy, stability, security
warrant, security, guarantee, insurance, support, affirmation
security, bond, guarantee, pledge, warranty, surety
protection, cover, security, guard, shelter, safeguard
Protection, security, and safeness could all be used as synonyms of safety.
There are multiple synonyms for deposition when it refers to geology. These include the synonyms precipitation, buildup, depositing, and accumulation.
Security is another word for safety or peace of mind. Synonyms of security include safeguard, sanctuary, and surety. "As a measure of security, the family installed a burglar alarm in their house."
They are synonyms.
Synonyms
Relative and kin are synonyms.
They are synonyms.