We don't have synonyms for honour guard yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are honor guard and colour guard.
(n) :
(Australia, Canada, New Zealand, UK) a ceremonial assembly of uniformed military personnel performing the duty of escort or exhibition, i.e. accompany a casket during a funeral procession.
(n) :
(Australia, Canada, New Zealand, UK) a ceremonial assembly of uniformed military personnel performing the duty of escort or exhibition, i.e. accompany a casket during a funeral procession.