Illustrated Architecture Dictionary
Spire

Any slender pointed construction surmounting a building; generally a narrow octagonal pyramid set above a square towerSteeple: a tall ornamental structure; a tower, composed of a series of stories, diminishing in size, and topped by amall pyramid, spire or cupola.
Tower: a building characterized by its relatively great height
Examples from Buffalo architecture:
- Illustration above: Westminster Presbyterian Church
- Samuel F. Pratt Monument, Forest Lawn Cemetery