Question: Which Scottish rock band was formed earlier, Cocteau Twins or Big Country?

Context paragraphs:
Driving to Damascus: Driving to Damascus is the eighth studio album by Scottish rock band Big Country.  It was released in 1999 as both a standard edition and a limited edition digipack, and with bonus tracks in 2002.  In the U.S. it was released under a different name, "John Wayne's Dream".  The limited edition version featured different cover artwork, and included two tracks by Stuart Adamson's alt-country side project, The Raphaels ("Shattered Cross" and "Too Many Ghosts", subsequently released on the 2001 album "Supernatural"), although there was no indication in the credits that these were not by Big Country.  "Driving to Damascus" marks the band's last studio album to feature vocalist Stuart Adamson (who would die in 2001) and bassist Tony Butler (who retired from the band in 2012), and the last studio album until "The Journey" was released in 2013 with The Alarm vocalist Mike Peters taking over for Adamson and Simple Minds bassists Derek Forbes replacing Butler.

Pearly-Dewdrops' Drops: "Pearly-Dewdrops' Drops" is a single by Scottish post-punk band Cocteau Twins, taken from their 1984 EP "The Spangle Maker".  The song was written by Cocteau Twins, and recorded at Rooster Studios in London.  It was their highest-charting single, peaking at No. 29 on the UK Singles Chart and No. 1 on the UK Indie Chart.

In a Big Country: "In a Big Country" is a song by Scottish rock band Big Country.  It was released in May 1983 as the third single from their debut studio album "The Crossing".  The song reached No. 17 on the UK Singles Chart in June 1983.  It was released in the US in the fall of 1983 and peaked at No. 3 on the Hot Mainstream Rock Tracks and No. 17 on the "Billboard" Hot 100 in December of that year.  It reached its highest overall national position in Canada, hitting number 3 on the "RPM" Top Singles Chart on 26 November 1983.

Cocteau Twins: Cocteau Twins were a Scottish rock band active from 1979 to 1997.  The original members were singer Elizabeth Fraser, guitarist Robin Guthrie, and bassist Will Heggie, who was replaced by multi-instrumentalist Simon Raymonde in 1983.  The group has earned much critical praise for its distinctive ethereal sound and the distinctive soprano vocals of Fraser, which often abandoned recognizable language altogether.  They were associated with the UK label 4AD for much of their career.

The Box Set (Cocteau Twins): The Box Set (also known as Cocteau Twins Singles Collection ) is a 1991 collection of EPs by the Scottish band Cocteau Twins.  It collects their non-album releases up until that time.  It also contains a bonus disc including songs from throughout their history which have not been otherwise released on Cocteau Twins releases.

Stars and Topsoil: Stars and Topsoil – A Collection (1982–1990) is a compilation album by the Scottish band Cocteau Twins, released on the 4AD label in October 2000.  The album featured tracks released during the group's time on 4AD between 1982 and 1990, covering every Cocteau Twins album from "Garlands" through "Heaven or Las Vegas".  The collection peaked at No. 63 on the UK Albums Chart.

The Moon and the Melodies: The Moon and the Melodies was an album resulting from the collaboration of the Scottish group Cocteau Twins and the American composer Harold Budd.  It was released by 4AD in November 1986.  The name "Cocteau Twins" did not appear on the release, which instead credited the band's three members (Elizabeth Fraser, Robin Guthrie and Simon Raymonde) and Budd individually.  The album's heavily treated guitar sounds and euphoric vocalising could be heard in the group's other work from the same period, such as the EP "Echoes in a Shallow Bay" and the album "Victorialand".  Budd's stylistic piano tonalities and phrasing on this project were echoed in his solo album "Lovely Thunder", released in the same year.  A version of the track "Memory Gongs" was released on "Lovely Thunder" as "Flowered Knife Shadows" and was dedicated to Raymonde.

Big Country: Big Country is a Scottish rock band formed in Dunfermline, Fife, in 1981.

Treasure (Cocteau Twins album): Treasure is the third studio album by Scottish rock band Cocteau Twins.  It was released on 1 November 1984 by 4AD.  With this album, the band settled on what would, from then on, be their primary lineup: vocalist Elizabeth Fraser, guitarist Robin Guthrie and bass guitarist Simon Raymonde.  This new lineup also coincided with the development of the ethereal sound associated with the band's music.

Head over Heels (Cocteau Twins album): Head over Heels is the second studio album by influential Scottish rock band Cocteau Twins.  The album was released in October 1983 by 4AD, and was their first album as a duo of Elizabeth Fraser and Robin Guthrie.  It featured the band's signature sound of "Guthrie’s lush guitars under Fraser’s mostly wordless vocals" and is considered an archetype of early ethereal wave music.

Supporting paragraphs: Cocteau Twins Big Country
Answer: Cocteau Twins were a Scottish rock band active from 1979 to 1997