When discussing shirk,  it should be known that there are two forms - the greater and the lesser. The greater form is the worship of idolatrous symbols  and/or idols themselves, while the lesser form is looking at causes, depending upon them or showing dependence on them while being heedless of Allah. Indeed Allah, He is the One who brought these things into existence. Showing off  is also a form of shirk, being referred to as minor shirk. The evidence for the dividing of shirk into categories has been mentioned by Allah in the Qur'an, reported in the Sunnah and agreed upon by the Consensus.
Idolatry & Its Forms
Imam Mustafa ibn Ahmad ash-Shatti al-Hanbali