Just don't make the mistake of equating synthesized sounds with synthetic ones.

Natural polyesters and a few synthetic ones are biodegradable.

We know this kind of "fingerprint" for the synthetic ones and natural ones alike.

Watch out for synthetic ones, which aren't as warm.

Scientists, aided by newer technologies, have used natural antibiotics to create synthetic ones.

Today, dyes based on lichens have largely been replaced by synthetic ones.

You don't have to compare real diamonds to synthetic ones.

If our organs are damaged, they can be replaced with synthetic ones that work just as well.

I dunno-these boys are savages, even though they're synthetic ones.

And natural dyes do not run the way some synthetic ones do.