Intimate
Part of speech: adjective
Definition: Closely acquainted; familiar. Of or involved in a sexual relationship. Personal, private.
Part of speech: noun
Definition: A very close friend. (in plural intimates) Women's underwear, sleepwear, or lingerie, especially offered for sale in a store.
Part of speech: verb
Definition: To suggest or disclose discreetly.
Example sentence: Electrical science has disclosed to us the more intimate relation existing between widely different forces and phenomena and has thus led us to a more complete comprehension of Nature and its many manifestations to our senses.
Sexual
Part of speech: adjective
Definition: of or relating to having sex (as in verb phrase usage; e.g. sexual reproduction)of or relating to the sex of an organism (as in concrete noun usage; e.g. male or female)of or relating to sexuality (as in abstract noun usage; e.g. sexual behavior)
Example sentence: It is the duty of every thoughtful Indian not to marry. In case he is helpless in regard to marriage, he should abstain from sexual intercourse with his wife.