Can someone translate these words to sandskrit?

Togetherness

Desire

Everlasting

Devotion

Perseverance

Eternally

Strength

Oh, is this for a tat for someone you love entirely and can't live without ? Just remember if it is for a tat, then this better be the RIGHT PERSON.

Tick

Togetherness : समासन
Desire : वनति / कौतुक (First one is erotic desire. Not sure of what you prefer)
Everlasting : चिरकालिक / शाश्वत
Devotion : अनुराग (devotion related to love)
Perseverance : तरणित्व
Eternally : अविरतम्
Strength : तवस्

NOTE: I am not an expert. In most cases, there were multiple choices, and I chose what I would think as the best.

Can some one please translate 2 Sandskrit what goes around comes around