the Catholic church says salvation is by grace and works. It also teaches that you can lose your salvation. Both assertions contradict Scripture.
The Catholic Church teaches salvation (God's plan/God's way) is a way of life. Some Protestants describe salvation as a point in time. They seem to think at some point in time salvation is a guarantee they are going to heaven. They seem to view salvation as being saved from hell. To Catholics it is much, much more.
Catholics believe salvation/redemption saves us from sin. In becoming disciples of Christ and living by his teachings, we turn from sin to do the will of the Father. God's grace provides us the strength and guidance we need to stay on the narrow way Christ described, to turn away from sin--because although the spirit is willing the flesh is weak. We need the grace of God to do this, and He bless us with His grace. God's grace also has sanctifying power.
These are ways Christ described the narrow way/discipleship: "I was hungry, thirsty, unknowing, homeless, sick, in prison...and you took care of me." Christ taught the narrow way as discerning the will of the Father and doing it. The narrow way is loving God and loving our fellow man.
Salvation/the Kingdom of God, Christ taught, is at hand, meaning it is within the reach of everyone, right now. Can we turn our backs on the Kingdom? Absolutely. And when we do, we remember the parable Christ told of the Prodigal Son. We will always be welcomed back. Can we wander off the path? Yes. And when we do, we remember Christ as the Good Shepherd leaving the ninety-nine to go in search of the one, to bring him back.
Catholics do not separate salvation, faith, grace, works, love. We live it all. Right here and right now. God's narrow path is His Kingdom. It starts here and extends into eternity.