Support. Seems like an obvious synonym. Note that there are automated systems in place for a community-led synonym to be created but not for merges. If consensus here is positive just flag this question for moderator attention though I expect one of us will get around to this when they see it later.
EDIT This is now done. Not too much visibility on this question but no negative responses so that's consensus to me.
updating post history, 43 rows affected (pipe delimited)
updating posts, 38 rows affected (pipe delimited)
updating PostTags associations, 22 rows affected
destroying 'applying': [applying] removed from (0 post, 0 history, 1 tag)
total: 1 tags deleted, 0 posts modified, 0 post histories modified
0 history records had empty tags; retagged to [untagged]
0 post records had empty tags; retagged to [untagged]
updating count for target tag, new count: 699
tag remapping of [applications] and [applying] complete!
remapping 0 synonyms
1 favorite and ignored tags remapped!
0 tracked tag badges were remapped!
Deleting Synonym applying -> job-search
Tag Synonym applying -> applications was approved!