any time a doubled ⟨c⟩ or ⟨k⟩ appears in standard english, it's either: a loanword (e.g. gnocci), a compound (e.g. bookkeeper), or two ⟨c⟩s pronounced differently (e.g. accept, pronounced /æksεpt/)
(accolade is perhaps the one exception, though it is also a loanword (though from the 17th century, so it's been here for a while and might not count anymore))