Looking on the internet deeply has found these results:

as well as is the most popular phrase on the web.

but also 1467,000,000 results on the web	as well as 11,870,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Demographic changes present not only serious challenges but also new opportunities. The biodiversity action plans are not just ambitious but also realistic. It was horrible, but also kind of uplifting. The victim was frozen, but also vitrified. Investment depends not only on effective and harmonised protection, but also on transparency. Not just for cyclists but also for cars. Not only Georgia but also Russia must participate in mediation. Secondly, globalisation entails new challenges but also opportunities.	Miss Love sings as well as dances. I came to understand Howard Ennis as well as any suspect I've pursued. ...as well as promotion for the arts. Towns change humanity's nature, as well as its destiny. There are preliminary lab reports, as well as complex computer code written on remains. ...as well as his cologne. MALCOLM: ...as well as the New Testament chapters in St. Matthew.

but also

1467,000,000 results on the web

as well as

11,870,000,000 results on the web

More popular!

Demographic changes present not only serious challenges but also new opportunities.
The biodiversity action plans are not just ambitious but also realistic.
It was horrible, but also kind of uplifting.
The victim was frozen, but also vitrified.
Investment depends not only on effective and harmonised protection, but also on transparency.
Not just for cyclists but also for cars.
Not only Georgia but also Russia must participate in mediation.
Secondly, globalisation entails new challenges but also opportunities.

Miss Love sings as well as dances.
I came to understand Howard Ennis as well as any suspect I've pursued.
...as well as promotion for the arts.
Towns change humanity's nature, as well as its destiny.
There are preliminary lab reports, as well as complex computer code written on remains.
...as well as his cologne.
MALCOLM: ...as well as the New Testament chapters in St. Matthew.