pronoun - used when the subject of the verb is 'they' and is the same as the object

noun - the medical specialty of the branch of medical science that studies the stomach and the intestines

noun - a country in north-eastern Africa, bordered by Egypt to the north, the Red Sea to the northeast, Ethiopia to the east, South Sudan to the south, the Central African Republic to the southwest, Chad to the west, and Libya to the northwest

adverb - near the end of a period of time (e.g. near the end of the day, near the end of the year etc.)

noun - the regular beat of the heart, can be felt at the wrist or side of the neck

noun - the front part of the neck, especially the tube in it; the back part of your mouth

noun - men's or women's underwear that covers the parts between the waist and the top of the legs

noun - one of the two days of the year when the day and night are the same length