The centres of symmetry in the crystal lattice are perfectly aligned.

The rational symptoms of the disease are fever and cough.

The symmetric differences between the two sets are the elements that are in one set or the other, but not in both.

I bought some sympathetic powders at the pharmacy.

I bought some sympathy cards for the grieving family.

The piano strings resonated with sympathetic vibrations.

Sydney funnel-web spiders are venomous and can be found in Australia.

I keep multiple symptom journals to track my health.

The jury reached a sympathy verdict in the trial.

The sympathy verdicts were unanimous in favor of the defendant.