祖父, そふ, じじ, じい, おおじ, おじ, そぶ
1. grandfather
Only おおじ, See 爺・1
2. old man
3. kyogen mask used for the role of an old man
我々は祖父の名前を息子に名付けた。
は
Particle, pronounced わ in modern Japanese
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis