activity undertaken as part of a commercial enterprise
connected with or engaged in or sponsored by or used in commerce or commercial enterprises
a commercially sponsored ad on radio or television
of the kind or quality used in commerce; average or inferior
any specific behavior
an organic process that takes place in the body
(chemistry) the capacity of a substance to take part in a chemical reaction
the trait of being active; moving or acting rapidly and energetically
a process existing in or produced by nature (rather than by the intent of human beings)
