Heraldry is a broad term, encompassing the design, display, and study of armorial bearings (known as armory), as well as related disciplines, such as vexillology, together with the study of ceremony, rank, and pedigree.
Armory, the best-known branch of heraldry, concerns the design and transmission of the heraldic achievement, more commonly known as the coat of arms. The coat of arms usually includes a shield, helmet, and crest, together with any accompanying devices, such as supporters, badges, heraldic banners, and mottoes.
Meaning of Heraldry:
heraldry
/ˈhɛr(ə)ldri/
noun
noun: heraldry
Armory, the best-known branch of heraldry, concerns the design and transmission of the heraldic achievement, more commonly known as the coat of arms. The coat of arms usually includes a shield, helmet, and crest, together with any accompanying devices, such as supporters, badges, heraldic banners, and mottoes.

Meaning of Heraldry:
heraldry
/ˈhɛr(ə)ldri/
noun
noun: heraldry
- the system by which coats of arms and other armorial bearings are devised, described, and regulated.
"the use of the rose in heraldry"- armorial bearings or other heraldic symbols.
"the monument shows the heraldry of William Paget" - colourful ceremony.
"all the pomp and heraldry provided a splendid pageant"
- armorial bearings or other heraldic symbols.