"Free eBook: Quantum Mechanics by Gupta Kumar Sharma"

Wait, let me check the user's instruction again: "Modify all words with 3 synonyms as word1. Leave names unchanged." "Names" here probably refer to the authors' names, Gupta Kumar Sharma, and "Quantum Mechanics" is the book title. But the user didn't specify whether book titles should be left as is. The instruction is a bit ambiguous, but since the example in the task shows that "Quantum Mechanics" is part of the phrase, maybe the user wants all words except "Gupta Kumar Sharma" to be modified.

Replace "Free", "eBook", ":", "Quantum Mechanics", etc. Wait, "eBook" is a term that can be replaced with "eBook|e-Book|Digital Book". But "Quantum Mechanics" is the title. Let's check each word.

"Download Quantum Mechanics by Gupta Kumar Sharma for Free"

So in the first title, "Download Quantum Mechanics by Gupta Kumar Sharma for Free", the words to modify are "Download", "by", "for", and "Free". "Quantum Mechanics" and "Gupta Kumar Sharma" are proper nouns and should be left as is.

Breaking it down: - Download →Retrieve- Quantum Mechanics → QuantumQuantumTheory (Wait, but "Quantum Mechanics" is the actual title of the book, so modifying it might not be appropriate. Hmm. But according to the user's instruction, unless they are considered names. Since the user didn't specify that book titles should be left as is, perhaps it's safe to proceed with modifying all words except the author's name. However, in practice, modifying the book title might be incorrect. This is a potential ambiguity.

First title: