censer / censor / senser / sensor are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
censer: (noun) a container for burning incense (especially one that is swung on a chain in a religious ritual).
censor: (noun) someone who censures or condemns. (noun) a person who is authorized to read publications or correspondence or to watch theatrical performances and suppress in whole or in part anything considered obscene or politically unacceptable. (verb) subject to political, religious, or moral censorship.
senser: NA
sensor: NA
censer: s·EH·n·s·er
censor: s·EH·n·s·er
senser: NA
sensor: s·EH·n·s·er
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)