Roosevelt, the proper noun, is pluralized as Roosevelts. The regular noun, roosevelt, would be pluralized as roosevi.
Cylinders.
McDonald's
boats
cobwebs
Martinez's
You wouldn't pluralize "processing", but you would pluralize "process" making more than one process "processes".
Handkerchiefs is correct.
Fournesses is the plural of Fourness
Folisis is the plural of Folisi
Sirs is the plural of sir
Do you mean, "How do you pluralize the phrase 'follow God's word' ? 1) Follow the words of God, or 2) Follow God's words.
The plural form of panic is panics.