People could not walk without friction. What friction are we talking about here, kinetic friction or static friction?

1. The word "push" is reasonably good synonym for the word FORCE. Is "hold" a synonym for force?

2. How about "support"?

3. How many others can you think of?

Obviously, it is static type of friction because it is between two static bodies i. e., feet and ground at a particular time instant dt.

1. No "Hold" is not a good synonym because it involves a static body. In "Push" both of the bodies are in some kind of motion a given action time.

2. Similarly, "Support" is also not a good synonym because it involves a static body as compulsory. By the way it can a synonym for "Hold".

3. Propel, Impel, Thrust and Shove are some basic synonyms that can be applied.