Producing as many as row count in the table "group1" with UNION results

Databases
1 
[b]data in the table "words"[/b]

[COLOR="Blue"]word1    word2[/COLOR]
gold     jewelry
jewelry  diamond

I have the table like the above.
The code below yields the result below.

[b]code[/b]

SELECT word2 as word
FROM words
WHERE
word1='jewelry'

UNION ALL

SELECT word1 as word
FROM words
WHERE
word2='jewelry'

[b]result[/b]

diamond
gold

So far, so good.

Here goes what I want.
I have another table named myGroup1 like the below.

[b]data in the table "myGroup1"[/b]

[COLOR="Blue"]group1[/COLOR]
group1-1
group1-2

I like to yield my target result below joining the table “words” and “group1.”

[b]target result[/b]

diamond group1-1
diamond group1-2
gold group1-1
gold group1-2
2

Join the tables.