[Kaslin]

Homicide is murder and is therefor a sin. Suicide is also murder and also a sin

[OneWingedShark]

Homicide is murder and is therefor a sin.

Nope; if this were true then there would never be a justifiable homicide, yet there are — even in the Old Testament Mosaic law.
(Ex: Ex 22:2 If a thief is found breaking in, and is beaten to death, no bloodguilt is incurred;.)

Suicide is also murder and also a sin

If that is the case, then Jesus [who intentionally ended his own life (therefore committing suicide)] sinned; we know this to be false.

This raises a contradiction, therefore one or more of the predicates must be false.

1. The definition of suicide is/includes the intentional taking of one's own life.
2. Jesus's sacrifice was intentional. [John 10:18]
3. Jesus knew his sacrifice entailed his own death. [John 10:18]
4. Jesus was sinless. [1 Peter 2:22; 1 John 3:5; 1 Peter 1:18-19]
5. Suicide is sin. [Your assertion.]

Which of these is false?
If scripture, please explain how and why the scripture cited is wrong and/or applied incorrectly.
If Dictionary.com is not a valid reference, please explain why and produce an mutually acceptable definition.