Yes, he is just changing the definitions of words to suit his purpose. But look up the words, faith, trust, or believe in any concordance and you will see the exact same word with the exact same meaning is used to describe faith in things other than Christ.
Jer 7:1 The word that came to Jeremiah from the LORD, saying,
2 Stand in the gate of the LORD'S house, and proclaim there this word, and say, Hear the word of the LORD, all ye of Judah, that enter in at these gates to worship the LORD.
3 Thus saith the LORD of hosts, the God of Israel, Amend your ways and your doings, and I will cause you to dwell in this place.
4 Trust ye not in lying words, saying, The temple of the LORD, The temple of the LORD, The temple of the LORD, are these.
5 For if ye throughly amend your ways and your doings; if ye throughly execute judgment between a man and his neighbour;
6 If ye oppress not the stranger, the fatherless, and the widow, and shed not innocent blood in this place, neither walk after other gods to your hurt:
7 Then will I cause you to dwell in this place, in the land that I gave to your fathers, for ever and ever.
8 Behold, ye trust in lying words, that cannot profit.
This is the very same word that is used to describe trust or faith in God.
2 Kings 18:20 Thou sayest, (but they are but vain words,) I have counsel and strength for the war. Now on whom dost thou trust, that thou rebellest against me?
21 Now, behold, thou trustest upon the staff of this bruised reed, even upon Egypt, on which if a man lean, it will go into his hand, and pierce it: so is Pharaoh king of Egypt unto all that trust on him.
22 But if ye say unto me, We trust in the LORD our God: is not that he, whose high places and whose altars Hezekiah hath taken away, and hath said to Judah and Jerusalem, Ye shall worship before this altar in Jerusalem?
Here the word trust is used four times, and each time it is the same word with the exact same meaning. And it is God himself speaking here. And he is speaking both of trusting on Egypt and Pharaoh, and of trusting in the LORD.
Go through your concordance, there are literally dozens of examples like this. The very same word "trust" is applied to believeing or trusting on God as is used in trusting on chariots and horsemen, and false idols made of wood and stone.