pursuit

Collins Cobuild// pursuit: 

2. N-UNCOUNT : N of n.

The pursuit of an activity, interest, or plan consists of all the things that you do when you are carrying it out.

• The vigorous pursuit of policies is no guarantee of success.
  

4. N-COUNT : usu pl, with supp

Your pursuits are your activities, usually activities that you enjoy when you are not working.

• They both love outdoor pursuits.
  

Am.Heritiage// pursuit: 

3. An activity, such as a vocation or hobby, engaged in regularly.

Thesaurus/WordNEt 3.0// 3. pursuit - an auxiliary activity

• (syn) avocation, hobby, spare-time activity, by-line, sideline
  
• (rel) pastime, pursuit, interest - a diversion that occupies one's time and thoughts (usually pleasantly);
  .. "sailing is her favorite pastime";
  .. "his main pastime is gambling";
  .. "he counts reading among his interests";
  .. "they criticized the boy for his limited pursuits"
  
• (rel) spelaeology, speleology - the pastime of exploring caves