Tra từ hobby - Từ điển Oxford Advanced Learner 8th

hobby [hobby hobbies] BrE [ˈhɒbi] NAmE [ˈhɑːbi] noun

(pl. hobbies)
an activity that you do for pleasure when you are not working
• Her hobbies include swimming and gardening.
• I only play jazz as a hobby.

Word Origin:
late Middle English hobyn, hoby, from pet forms of the given name Robin. Originally referring to a small horse or pony, it later came to denote a toy horse or hobby horse, hence ‘an activity done for pleasure’.

Thesaurus:
hobby noun C
•Her hobbies include swimming and cooking.
interest • • pastime •
a popular hobby/interest/pastime
have/share hobbies/interests
take up/pursue a/an hobby/interest
Hobby, interest or pastime? A hobby is often more active than an interest:
•His main hobby is football (= he plays football).
• His main interest is football (= he watches and reads about football, and may or may not play it).
Pastime is used when talking about people in general; when you are talking about yourself or an individual it is more usual to use interest or hobby:
•Eating out is the national pastime in France.
✗ Eating out is the national hobby/interest in France.:
•Do you have any hobbies/interests?
✗ Do you have any pastimes?

Synonyms:
interest
hobby • game • pastime
These are all words for activities that you do for pleasure in your spare time.
interest • an activity or a subject that you do or study for pleasure in your spare time: ▪ Her main interests are music and gardening.
hobby • an activity that you do for pleasure in your spare time: ▪ His hobbies include swimming and cooking.
game • a children's activity when they play with toys, pretend to be sb else, etc; an activity that you do to have fun: ▪ a game of cops and robbers ◇ ▪ He was playing games with the dog.
pastime • an activity that people do for pleasure in their spare time: ▪ Eating out is the national pastime in France.
interest, hobby or pastime?
A hobby is often more active than an interest: ▪ His main hobby is football ▪ (= he plays football) ▪. ◇ ▪ His main interest is football ▪ (= he watches and reads about football, and may or may not play it) ▪. Pastime is used when talking about people in general; when you are talking about yourself or an individual person it is more usual to use interest or hobby: Eating out is the national interest/hobby in France. ◇ Do you have any pastimes?
a popular interest/hobby/pastime
to have/share interests/hobbies
to take up/pursue a(n) interest/hobby

Example Bank:
•Cooking is her pet hobby.
•Cycling and karate are among her hobbies.
•Do you have any hobbies?
•He collects postcards as a hobby.
•He takes photographs as a hobby.
•Photography can be an expensive hobby.
•She never had any time to pursue her hobbies.
•Why don't you take up a new hobby?
•Her hobbies include swimming and cooking.