Costume and make-up

Definition of costume and make-up: A costume can refer to all clothes general, or to the style of dress of a particular region, class, or time. Costume can also refer to the arrangement of accessories in a film. Stage makeup is used with stage lighting to highlight the actors' faces in order make expressions visible to the audience from further distances. Special effects make-up, including the use of prosthetics and plaster casting, are used when non-human appearances are needed. Theatrical blood and ooze are also created with stage make-up. Costumes and make-up can help actors portray characters' age, gender, job, class, personality, ethnicity, and even information about the historical period/era, location, time of day, as well as the season or weather.
Example of costume:

Different costumes are needed in Downton Abbey to show it is set back in time and in what time period and this makes it more realistic for the audience. The costumes are also different depending on the other factors metioned above.
Example of make-up:
Special effects make-up is needed in doctor who to make the people look like aliens, the make-up can fool the audience and make the ordinary people look like aliens for the audiences' enjoyment.