Unlike trust that has to be reciprocated for trust to be established and maintained, loyalty operates on many levels both blatant and very subtle.
An employee will be loyal to a fault and perhaps even compromise their mores to keep a job and even get ahead at their job.
Loyalty in relationships is a fairly obvious one where if you are not loyal often you find yourself very single.
Loyalty from a pet or to a pet is to sustain that pets health and well being and get a little loving in return.
You can be loyal to a sports team or product brand, music or band. Lots of types and styles to loyalty we all participate in every day of our lives.